Given cos A = .25 find angle A in degrees. Round your answer to the nearest hundredth.
A. 34.12°
B. 123.98°
C. 56.78°
D. 75.52°

Question

Given cos A = .25 find angle A in degrees. Round your answer to the nearest hundredth.
A.		 34.12°
B.		 123.98°
C.		 56.78°
D.		 75.52°

anonymous · Answer

You take the inverse cos function $$cos^{-1}$$  If you Google scientific calculator online there a calculator that has these functions on them.

anonymous · Answer

yup,  
$$\cos^{-1} (.25)$$
will give you one of those four answers...

anonymous · Answer

thank you ehuman !!!!!

anonymous · Answer

you bet

anonymous · Answer

cos examines an angle and gives you a ratio
inverse cos examines a ratio and gives you an angle.