Question

Use a calculator to find the value of each expression rounded to two decimal places. Make sure you are in Radian Mode.
cos-(0.75)

Answer 1

If you meant to write $\cos^{-1}(0.75)$, then using a calculator in radian mode would show $\cos^{-1}(0.75) \approx 0.722734$

Rounding to the nearest hundredth gets us $\cos^{-1}(0.75) \approx 0.72$

Answer 2

Answer:

Your answer

Cos(-0.75) = 0.9999