Given that cos(θ)=−2√13/13, and θ is in Quadrant II, what is sin(θ)?

Report your answer as a rationalized fraction.

Answers

Answer 1

The value of sin(θ) = 3√13/13

What is trigonometric ratio?

Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle. The ratios of sides of a right-angled triangle with respect to any of its acute angles are known as the trigonometric ratios of that particular angle.

if cos(θ) = adj/hyp = 2√13/13

then

2√13 = adj, hyp = 13

opp = √ 13²- 2√13)²

= √169- 52

= √117

= √13 × 9

= 3√13

since the θ is in second quadrant, cosine will be negative and sine will be positive

therefore sin(θ) = 3√13/13

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Related Questions

3 A farmer's horses drink from a rectangular water tank with dimensions shown.

2 4/5 ft

2 2/5 * ft

2 1/2 * 1

5 3/5 * ft

4 4/5 ft

When the farmer refills the tank, it takes the horses 4 days to drink all the water. The farmer wants to build a new, larger tank and plans to increase each measurement of the tank by 25%.

Section 3

By what percentage will the amount of water the farmer can put in the tank increase when the larger tank is built?

Explain how you found your answers.

Enter your answers and your explanation in the space provided.

How many days will it take the horses to drink all the water in the larger tank?

3 A farmer's horses drink from a rectangular water tank with dimensions shown.2 4/5 ft2 2/5 * ft2 1/2

Answers

The amount of water the farmer can put in the tank increase when the larger tank is built is 106.33%.It takes 4days for the horses to drink all the water in the larger tank.

What is percentage?

Percentage is a way of expressing a proportion or a fraction out of 100. It represents the number of parts per hundred of a quantity.

What does dimension refers to?

Dimension refers to a measurable aspect of an object or a system, such as length, width, height, depth, volume, area, or mass. In mathematics, dimension also refers to the number of coordinates required to specify a point in a space. For example, a two-dimensional shape like a square has two dimensions, length and width, while a three-dimensional object like a cube has three dimensions, length, width, and height.

To find the percentage increase in the amount of water the farmer can put in the larger tank, we need to calculate the volume of the original tank and the volume of the larger tank, and then compare the two.

The original tank has dimensions of 2 4/5 ft, 2 2/5 ft, and 2 1/2 ft. We can convert these mixed numbers to improper fractions for easier calculations:

2 4/5 ft = (2 x 5 + 4)/5 ft = 14/5 ft

2 2/5 ft = (2 x 5 + 2)/5 ft = 12/5 ft

2 1/2 ft = (2 x 2 + 1)/2 ft = 5/2 ft

The volume of the original tank is then:

Volume = Length x Width x Height = 14/5 ft x 12/5 ft x 5/2 ft

Now, the farmer plans to increase measurement  by 25%. To do this, we multiply each measurement by 1.25.

The dimensions of the larger tank would be:

Length = 14/5 ft x 1.25 = 3.5 ft

Width = 12/5 ft x 1.25 = 3 ft

Height = 5/2 ft x 1.25 = 3.125 ft

The volume of the larger tank is then:

Volume = Length x Width x Height = 3.5 ft x 3 ft x 3.125 ft

To find the percentage increase, we can compare the two volumes:

Percentage increase = ((Volume of larger tank - Volume of original tank) / Volume of original tank) x 100

Plugging in the values we found:

Percentage increase = ((3.5 ft x 3 ft x 3.125 ft - 14/5 ft x 12/5 ft x 5/2 ft) / (14/5 ft x 12/5 ft x 5/2 ft)) x 100

After calculating the above expression, we find that the percentage increase is approximately 106.33%. So, the amount of water the farmer can put in the larger tank will increase by approximately 106.33% when the larger tank is built.

Now, to find how many days it will take the horses to drink all the water in the larger tank, we can assume that the rate at which the horses drink water remains constant. Since the volume of the larger tank is approximately 106.33% more than the original tank, it will take the horses approximately the same amount of time to drink all the water in the larger tank, which is 4 days.

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> Pip rolls a fair dice 150 times.
How many times would Pip expect to roll a number greater
than 2?

Answers

Answer:

the answer is 100

Step-by-step explanation:

the number greater than 2 : 3,4,5,6

so 4/6 x 150 = 2/3 x 150 = 100


Twenty years ago, 51% of parents of children in high school felt it was a
serious problem that high school students were not being taught
enough math and science. A recent survey found that 232 of 700
parents of children in high school felt it was a serious problem that high
school students were not being taught enough math and science. Do
parents feel differently today than they did twenty years ago? Use the
α = 0.1 level of significance

Answers

No the parents do not feel differently as they used to feel twenty years ago

Given :-

Po: p=0.46

Pa: p NE 0.46

alpha=0.01

Test statistic is one sample proportion \(z=(phat-p)/\sqrt{{ {0.46)(0.54)/800}}\)

Critical value z> |2.576|

z=0.025/0.0176

=1.418

This is a p-value of 0.078

Fail to reject Po  and insufficient evidence to support the claim that parents feel differently.

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What is the volume of this composite solid?
2 m
8 m
3 m
5 m

What is the volume of this composite solid?2 m8 m3 m5 m

Answers

Answer:

240

Step-by-step explanation:

2*8*3*5

Answer:

160

Step-by-step explanation:

a P e X

How many 50ml can be filled from 5L

Answers

100 50ml containers can be filled from 5L.

In the diagram, CDE is parallel to FG.
ADG and BDF are straight lines.
Work out angle y.

In the diagram, CDE is parallel to FG. ADG and BDF are straight lines. Work out angle y.

Answers

I think angle y is 102 degrees

The measure of the angle y in the given figure where CDE is parallel to FG, ADG and BDF are straight lines is 74°.

Given that a figure with CDE is parallel to FG and ADG and BDF are straight lines.

We need to find the value of angle y.

So,∵ CDE║FG,

∴ ∠CDF = ∠DFG by alternate angles postulate.

∴ ∠CDF = 67°

Now,

∠CDF = ∠BDE by vertical angles postulate.

∴ ∠BDE = 67°

Also, ∠ADB = ∠FDG = y by vertical angles postulate.

We know that an angles measures 360° when it is complete, so, here,

∠CDF + ∠FDG + ∠GDE + ∠EDB + ∠ADB + ∠ADC = 360°

67° + y + 39° + 67° + y + 39° = 360°

2y + 134° + 78° = 360°

2y = 148°

y = 74°

Hence the measure of the angle y is 74°.

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Tricia and Melanie are both saving money for their summer vacations. They both began saving at the same time. Tricia started with $10.25 and adds $5.15 to her savings every month. Melanie did not have a starting amount but adds $9.25 to her savings every month. Which equation could be used to determine how many months, m, it will take before Tricia and Melanie both have saved the same amount of money?

Group of answer choices

10.25m – 5.15 = 9.25m

10.25m + 5.15 = 9.25m

9.25m + 10.25 = 5.15m

5.15m + 10.25 = 9.25m

Answers

Answer:

5.15m + 10.25 = 9.25m

Step-by-step explanation:

Tricia's savings can be calculated with her beginning amount, $10.25, plus a rate of $5.15 that is multiplied by the number of months she saves up, m.

Or, 10.25 + 5.15m.

Melanie saves $9.25 for her vacation, times the months that she saves up, m.

Or, 9.25m.

These two equations are equal to each other at a certain value of m, so our equation is-

5.15m + 10.25 = 9.25m

I hope this helps ^^ Good luck mate

Here are the heights (in inches) of 12 students in a seminar. 71, 67, 62, 60, 70, 64, 68, 72, 58, 63, 60, 66 What is the percentage of these students who are shorter than 65 inches? 1% X 5​

Answers

25% of the students in the seminar are shorter than 65 inches.

To find the percentage of students who are shorter than 65 inches, we first need to find the number of students whose height is less than 65 inches:

There are three students who are shorter than 65 inches: 62, 60, and 58.

Therefore, the percentage of students who are shorter than 65 inches is:

(3 students / 12 students) × 100% = 25%

Note that the value given for 1% × 5 does not appear to be relevant to this question, and is not necessary for the calculation of the percentage of students who are shorter than 65 inches.

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Please help that’s all I ask just please help

Please help thats all I ask just please help

Answers

Answer: 1017.88

Step-by-step explanation:

Hope it is right

1017.8 why bc I calculate

For positive acute angles A and B it is known that tan A 15/8 and Cos B 12/37 find the value of Cos (A+b) being in simplest form

Answers

Answer:

Step-by-step explanation:

Cos(A + B) = Cos(A)*Cos(B) - Sin(A)*Sin(B)

Find The Hypotenuse of A

Tan(A) = Opposite / Adjacent

Tan(A) = 15/8

Opposite = 15

Adjacent = 8

Hypotenuse = c

c^2 = opposite^2 + Adjacent^2

c^2 = 15^2 + 8^2

c^2 = 225 + 64

c^2 = 289

sqrt(c^2) = sqrt(289)

c = 17

Find the opposite of B

Adjacent = 12

Hypotenuse = 37

Opposite = b

adjacent^2 + opposite^2 = hypotenuse^2

12^2 + b^2 = 37^2

144 + b^2 = 1369

b^2 = 1369 - 144

b^2 = 1335

b = 35

Definitions

Sin(A) = Opposite / hypotenuse = 15/17

Sin(B) = opposite / hypotenuse =  35/37

Cos(A) = 8/17

Cos(B) = 12/37

Answer

Cos(A + B) = Cos(A)*Cos(B) - Sin(A)*Sin(B)

Cos(A + B) = 8/17 * 12/37 - 15/17*35/37

Cos(A + B) = 96/629 - 525/629

Cos(A + B) = -429/629

Joyce works at Fortunato's Furniture. She is paid on commission. She receives 10% of her first $1,200 in sales and 15% of the balance of her sales. Last week she earned $950. What was the value of the furniture she sold? show your work.

Answers

The total value of the furniture sold by Joyce last week is A = $ 6,733.33

Given data ,

Let's call the value of the furniture Joyce sold "x".

She receives 10% commission on the first $1,200 of sales, which is $120:

Commission on first $1,200 = 0.1 * 1200 = 120

The remaining sales that she earns commission on is the difference between the total value of the furniture sold and the first $1,200:

Remaining sales = x - 1200

She earns 15% commission on the remaining sales, which is 0.15 times the remaining sales:

Commission on remaining sales = 0.15 * (x - 1200)

Her total earnings from commission last week was $950. So we can write an equation:

Commission on first $1,200 + Commission on remaining sales = $950

Substituting the expressions we found for the two commissions, we get:

120 + 0.15(x - 1200) = 950

120 + 0.15x - 180 = 950

On simplifying the equation , we get

0.15x - 60 = 950

0.15x = 1010

x = 6,733.33

Hence , the value of the furniture Joyce sold last week was $6,733.33

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The triangle and the rectangle have the same area.
All lengths are in cm.
7x + 2
a Form an equation in x.
b Solve your equation to find x.
c Work out the area of the shapes.
1
2x + 7

Answers

The length of one side of the equilateral triangle in terms of x is 6x.

To find the length of one side of the equilateral triangle in terms of x, we need to consider the perimeter of both the rectangle and the equilateral triangle.

The perimeter of a rectangle is given by the formula:

Perimeter of rectangle = 2(length + width)

In this case, the length of the rectangle is 7x cm, and the width is 2x cm. Substituting these values into the formula, we have:

Perimeter of rectangle = 2(7x + 2x) = 2(9x) = 18x

We are told that the equilateral triangle has the same perimeter as the rectangle.

Since an equilateral triangle has all sides equal, the perimeter can be calculated by multiplying the length of one side by 3.

Therefore, we have:

Perimeter of equilateral triangle = 3(side length)

Since the perimeter of the equilateral triangle is equal to the perimeter of the rectangle (18x), we can set up the equation:

3(side length) = 18x

Dividing both sides of the equation by 3, we get:

side length = 6x

Hence, the length of one side of the equilateral triangle in terms of x is 6x.

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The complete question may be like: A rectangle measures 2x cm by 7x cm. An equilateral triangle has the same perimeter as the rectangle. What is the length of one side of the triangle in terms of x?

In a classroom, 100 plastic fish are in a tub. The tub is hidden from the student view. Some fish are green, and the rest are yellow. The students know that there are 100 fish, but they don’t know how many of each color there are. The students go fishing, each time, picking a random fish from the tub, recording its color, and throwing the fish back in the tub. At the end of the day, 65 fish have been chosen, 12, green and 53 yellow. What is the best estimate you can give for the number of green fish in the number of yellow fish in the tub? Describe how to calculate this best estimate, and explain why your method of calculation makes sense in a way that a seventh grader my understand. Is your best estimate necessarily accurate? Why or why not?

Answers

The best estimate for the number of fish is that there are 82 yellow fish and 18 green fish, which you can calculate using the rule of three. This estimate is expected to be accurate.

What is the estimated number of fish of each color?

This can be calculated using a rule of three as follows. Let's start with the yellow fish:

53 = 65

x    = 100

53 x 100 / 65 = 82 yellow fish

Green fish:

12 = 65

x = 100

12 x 100 / 65= 18 green fish

Is this estimate accurate?

This estimate is expected to be accurate; however, there might be small differences in real life such as 80 yellow fish and 20 green fish.

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Please answer ASAP!
I will give 25 points

How did geography affect early humans' use of resources?

Answers

150 years have a amazing day

What is the area of the triangle?

Answers

Answer:

The formula to find a triangle is (L+W)/2

Step-by-step explanation:

Find the height represented by x.

Find the height represented by x.

Answers

Answer:

find the given numbers on the number line

A recipe calls for 3 parts water to 1 part milk. How much
milk will you need If you use 12 mL of water?

Answers

Step-by-step explanation:

If 3ml of water = 1 part milk

12ml of water = x

3x=12

3x/3=12/3

Cancelling out by 3

x=4

Therefore she will need 4 part milk to make the recipe.

Mark is 4 times as old as his son James. The sum of their ages is 50. What is Mark's Age?

Answers

Answer:

50

Step-by-step explanation:

if we sad the son is 10 years old so 40*10=40 this the mark age then and 10 his son age =50

Which expression shows 48 + 36 written as a product of two factors

Answers

Answer:

12(4+3)

Step-by-step explanation:

What is the area of this polygon?

Enter your answer in the box,
units?

What is the area of this polygon?Enter your answer in the box,units?

Answers

Answer: it's 39.

Step-by-step explanation: for this figure, you want to divide it into two parts:    The triangle and the rectangle.

The triangle has a base of 6, and a height of 3.

The formula for area of a triangle is 1/2 bh.

So the area of the triangle is 9!! 6 x 3 is 18.. divided by two is 9.

Then the rectangle, a= b(h)

the height is 6 while the base is 5.

When you multiply thsoe two you get 30.

When should you use histograms & why

Answers

Answer: At times when your not sure of what to do with a big set of measurements shown in a table, you can use a Histogram to arrange and display the data in a more user friendly and understandable format. It makes it easy to see where most of the values fall in a measurement scale, and how much difference there is.

Step-by-step explanation:

Which of the following is a true statement?
3/4>9/12
3/5<4/7
6/7<5/8
5/12>3/8
Can any show me another one simple way to do this.

Answers

Answer:

The answer is the last one 5/12 > 3/8

Step-by-step explanation:

Convert the fractions to regular numbers so 5/12 just do 5 ÷ 12 and 3/8 do 3 ÷ 8 whatever side has the arrow opened to means that's should be the bigger number for example 2 > 1 is true because 2 is greater than 1 but 2 < 1 is false

Answer:

5/12>3/8

Step-by-step explanation:

you need a common denominator

you multiply 5/12 by 2 the top and the bottom to get 10/24

then you multiply 3/8 by 3 the top and the bottom to get 9/24

10/24>9/24

I am a quadrilateral.
• I have two pairs of parallel sides.
• All my sides are the same length.
Which name describes me the best?
rectangle
parallelogram
trapezoid
square
rhombus

I am a quadrilateral. I have two pairs of parallel sides. All my sides are the same length.Which name

Answers

Answer:

those criteria define a square or a rhombus

Step-by-step explanation:

if there was another fact about the angle measures, for example if it said all my angles are equal then it would be a square, not a rhombus

19-x²
if x = -5
How would you solve this math problem?

Answers

The solution to the math problem is -6.

A math problem is a problem that can be represented, analyzed, and probably solved, with the techniques of arithmetic. This will be an actual-world problem, inclusive of computing the orbits of the planets inside the solar gadget, or trouble of a greater summary nature, such as Hilbert's problems.

The Collatz Conjecture is the only math problem no person can resolve it is straightforward and sufficient for almost every person to recognize but notoriously difficult to resolve.

= 19 - ( - 5 ) ²

= 19 - ( 25 )

= 19 - 25

= - 6

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Which number would go in the shaded region, not the circle?

Which number would go in the shaded region, not the circle?

Answers

Answer:

Step-by-step explanation:

If m< 4 = 130°, find m< 7.

Answers

Answer:

Are m< 4 and m< 7 supplementary angles?

In that case the answer is m< 7=50 degrees.

Step-by-step explanation:

In that case...

m< 4+m< 7=180

130+m< 7=180

130-130+m< 7=180-130

m< 7=50 degrees

A rectangular piece of land has an area of 3/4 square mile.The land is 2 1/2 miles long what is its width

Answers

Answer:

width = 3/10 mi

Step-by-step explanation:

area = length * width

width = area/length

width = (3/4 mi^2)/(2 1/2 mi)

width = (3/4 mi^2)/(5/2 mi)

width = 3/4 * 2/5 mi

width = 6/20 mi

width = 3/10 mi

is (1,3) a solution to this system of equations?
4x + 5y = 19
x + 5y = 16

Answers

Answer:

Yes

Step-by-step explanation:

I graphed both of the equations on the graph below to show you that they intersect at the point (1,3), making it the solution to the system.

If this answer is correct, please make me Brainliest!

is (1,3) a solution to this system of equations?4x + 5y = 19x + 5y = 16

Answer: Yes

Step-by-step explanation:

Jsjsjs I hate this school app

Jsjsjs I hate this school app

Answers

PREWRITE

I HOPE IT'S HELP PLZ FOLLOWING ME

A) Pre-writing ayyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

I need this so much! If you do this I will mark you as brainlist!

I need this so much! If you do this I will mark you as brainlist!

Answers

Answer:

b

Step-by-step explanation:

6-10 is -4 times 3 is -12

Answer:

C

Step-by-step

9 times -2 equals

-18 minus 6 equals

-12

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Which term(s) in the general form of the t statistic is (are) computed differently between the usual OLS t-statistic and the heteroskedasticity-robust t-statistic?a. Estimate and standard error. b. Estimate, standard error, and the hypothesized value. c. Estimate only. d. Standard error only. A sample of 51 observations will be taken from a process (an infinite population). The population proportion equals .85. The probability that the sample proportion will be between .9115 and .946 is _____. Subtracting Polynomials. (3x^2 - 4x) (5x x^2 ) A. 2x^2 9x B. 4x^2 9x C. 2x^2 + x D. 4x^2 + 9x I Will Give You Brainliest Pls Help Asap!Which phrase best completes the diagram? physical geogrpahy of southeast asia > is made up of peninsulas and islands > features many large mountains > ____? A. has very little fertile farmland B. has cold weather most of the year C. usually receives a lot of rain D. rarely experiences major storms Which example would support a comparison of email and phone use to wish a friend Happy Birthday? A. Pam told me that she was thrilled to actually talk with a friend on her birthday, as all her other friends had simply emailed her. B. You can put a lot more in an email than you can in a phone conversation, and people will know you are being sincere. C. If you want to be sure of being understood, use the phone, not email.I NEED IT IT NOW PLEASE HELP A Louisville community resource that has been around for decades is pausing its activities due to financial difficulties. ElderServe, which has provided care to Louisville's senior population since 1962, announced that it would temporarily stop operations and "regroup." ElderServe, which has provided care to Louisville's senior population since 1962, announced that it would temporarily stop operations and "regroup." A statement on the organization's website said the coronavirus pandemic paired with the "changing philanthropic landscape" put the nonprofit in a place where it could no longer continue serving the community. Last year, the organization focused its operations in the Russell neighborhood. For years, seniors visited the Oak & Acorn center on 28th and Magazine for daily social activities and resources, according to the nonprofit. Frank Pilgrim, who lives in the Russell neighborhood, said he is concerned that the center's sudden closing will have a ripple effect. He lives across the street from the center and said he counts on ElderServe's food pantry for groceries at least twice a month. Many other seniors count on the center for professional care and companionship specifically designed for them. "There are a lot of senior citizens like me who need this place," Pilgrim said. "My health is bad, so I'm not able to go anywhere else. I depend on this." Ultimately, Pilgrim said seniors weren't given notice before the shutdown, so the announcement came as a shock. "We just don't understand, we need some answers," he said. According to its website, ElderServe focuses on four elements of care: overcoming social isolation, promoting wellness, supporting independence, and protecting seniors. Neighbors, like retired judge and prosecutor Toni Stringer, said there's not another comparable service nearby, so its absence will leave a major void in the community. "All the west Louisville residents who are affected see is yet another service that was provided to this area being taken away without anything to replace it," Stringer said. "This wasn't just brick and mortar, this was family for a lot of people. While they're figuring out what they're going to do, what are the former clients supposed to do? Who are they going to turn to now?" Patty Belden, ElderServe CEO, said in a statement that it has been "nearly impossible" to get sustainable funding for the organization. "We are an unrecognized asset to the Louisville healthcare ecosystem," Belden said in a statement. "It's my hope that the temporary absence of ElderServe programs will expose the critical need for these services and the responsibility of the community to support them." Stringer and others in the community, like Kentucky State Representative Pamela Stevenson (D, District 43) say they want specifics on where things went wrong. "We say it's money, and it could very well be, but why is it money? Did donations drop, did grants drop, what happened?" she said. The nonprofit said all programs and services will end immediately, giving time for leaders to reevaluate the needs of Louisville's senior population. 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