Question

What is the best approximation of Angle A, given cos A= .578?????

Answer 1

Possible answers are...
A. 30.03 degrees
B. 35. 31 degrees
C. 43.89 degrees
D. 54.69 degrees

If someone could explain to me how to get the answer and what steps to follow...that would be awesome!

Answer 2

cos-1(0.578)
~54.6 degrees

so D

Answer 3

Okay can you use calculator?

Answer 4

I just plug cos-1(.578) into the calculator right??
Do I need to convert anything into degrees??

Answer 5

Assuming thats all in degrees not radians, yeah, you dont have to do anything

Answer 6

Okay thank you so much!

Answer 7

np :)