Question

Use a calculator to find the approximate angle measure of the following : cos^-1 (1/4)

Answer 1

`75.52^o`

Explanation:

Let

x ----> the measure of the angle

we have

`cos(x)=(1)/(4)`

using a calculator

Find the the measure of angle x

`x=cos^(-1)((1)/(4))`

`x=75.52^o`