Question

Solve for x. Round to the nearest tenth of a degree, if necessary.

Answer 1

x = 40°

Explanation:

Reference angle = x°

Adjacent side length to reference angle = 7.2

Hypotenuse = 9.4

Apply trigonometric function CAH, which is:

Cos x = Adj/Hyp

Substitute

Cos x = 7.2/9.4

Cos x = 0.76596

`x = cos^(-1)(0.76596)`

x = 40° (nearest tenth)