Question

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

Answer 1

Set your calculator to degree mode.

`\cos(x) = (3.9)/(8.5)`

`x = {cos}^( - 1) (39)/(85) = 62.7 \: degrees`

Angle x measures 62.7°.

Answer 2

62.7

Explanation:

For angle x, 3.9 is the adjacent leg.

8.5 is the hypotenuse.

cos Θ = adj/hyp

cos x = 3.9/8.5

cos x = 0.4588235

x = cos^-1 0.4588235

x = 62.68878

Answer: 62.7