Question

Let ZD be an acute angle such that cos D = 0.64. Use a calculator to approximate the measure of ZD to the nearest tenthof a degree.m/D

Answer 1

Given:

`\cos D=0.64`

D is an acute angle

Find-:

The value of D

Explanation-:

The angle D is:

`\begin{gathered} \cos D=0.64 \\ \\ D=\cos^(-1)(0.64) \\ \\ D=50.208 \end{gathered}`

The value of the nearest tenth is 50.2