Question

Solve for the value of X. Round to the nearest whole number.

Answer 1

x = 30º

Explanation:

This answer requires trigonometry, specifically, the cosine function. This is because we are given the length of the side adjacent to x and the length of the hypotenuse.

If you recall:

`cos(x )= (adjacent)/(hypotenuse)`

Therefore,

`cos(x) = (13)/(35)`

Now, we must use the inverse cosine function on a calculator to figure out the value of x.

`cos^(-1)((13)/(15)) = 29.93`

Now, we must round it to the nearest whole number, so x = 30º.