Question

Find the value of x, rounded to the nearest tenth.

A.) 12.9
B.) 8.5
C.) 8.1
D.) 12.4

Answer 1

The correct answer is C) 8.1

Explanation:

In order to solve the equation for x, we can use trigonometric functions. Since we are given the side adjacent to the angle and the hypotenuse, we'll use cos.

Cos(α) = ADJ/HYP

Cos(36) = x/10

10Cos(36) = x

8.1 = x