If tan0= 3/4, find cos0

I assume that 0 means theta in your post.

I will use x for 0 and then back-substitute at the end of the math work.

As you know, tan x = opposite/adjacent.

So, 3/4 = opposite side/adjacent side.

We are in quadrant 1. In quadrant 1 all trigonometric functions are positive.

We need to find the hypotenuse of the right triangle formed in quadrant 1 using the Pythagorean Theorem.

Do you remember the Pythagorean Theorem?

Here it is: a^2 + b^2 = h^2, where a = b = side of right triangle and h = hypotenuse.

Let a = 3

Let b = 4

We need to find h.

(3)^2 + (4)^2 = (h)^2

9 + 16 = (h)^2

25 = (h)^2

Taking the square root on both sides of the equation, we find h to be 5. All parts of the right triangle in quadrant 1 have been found.

You want to find cos x. What is cos x in terms of any right triangle? You know from class that cos x = adjacent side/hypotenuse.

Knowing this fact, cos x = 4/5.

Back-substitute for x.

cos (0) = 4/5.

I hope this helps.

alright well the answers to your question is

2xy/9 hope this have a nice day : )

step-by-step explanation:

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.