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3 years ago

Find the value of Y. PLEASE HURRY

Mathematics

1 answer:

12345 [234]3 years ago

5 0

Ez it’s…. I’m so smart

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Look at the image. (calculus)

mash [69]

<h3>Answer: Choice H) 2</h3>

=============================================

Explanation:

Recall that the pythagorean trig identity is $\sin^2 x + \cos^2x = 1$

If we were to isolate sine, then,

$\sin^2 x + \cos^2x = 1\\\\\sin^2 x = 1-\cos^2x\\\\\sin x = \sqrt{1-\cos^2x}\\\\$

We don't have to worry about the plus minus because sine is positive when 0 < x < pi/2.

Through similar calculations, $\cos x = \sqrt{1-\sin^2x}\\\\$

Cosine is also positive in this quadrant.

-------------

So,

$\frac{\sqrt{1-\cos^2x}}{\sin x}+\frac{\sqrt{1-\sin^2x}}{\cos x}\\\\\frac{\sin x}{\sin x}+\frac{\cos x}{\cos x}\\\\1+1\\\\2$

Therefore,

$\frac{\sqrt{1-\cos^2x}}{\sin x}+\frac{\sqrt{1-\sin^2x}}{\cos x}=2$

is an identity as long as 0 < x < pi/2

5 0

2 years ago

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If the area of a square is 36 inches what is the length of one side?

Pavel [41]

To find the length of a square given the area, we just need to take the square root of the area given. The sqrt of 36 is 6, so each side is 6 inches. :)

4 0

3 years ago

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2 MATH K.

Ann [662]

Answer:

Step-by-step explanation:

Given the addition problem:

58 + 36

We can form a table :

5 _______ 8

3 _______ 6

9 4

Hence, (58 + 36) = 94

4 0

3 years ago

Which equation has the graph shown?

kykrilka [37]

Answer:

2nd answer choice

Step-by-step explanation:

Graph is increasing by 1

7 0

3 years ago

2 +4 +5+400+888+953<br> what is it

Zolol [24]

The answer is 2,254!

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3 years ago

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