Question

In Problems $76-80$, use a calculator to find an approximate value for each expression, rounded to two decimal places.

${\cos }^{-1}(-0.2)$

Short answer

The approximate value is${\cos }^{-1}(-0.2)=1.77$

Step-by-step solution

Given information

Given expression${\cos }^{-1}(-0.2)$

Use a calculator and calculate the value

Calculating, we get

${\cos }^{-1}(-0.2)=1.77$