Question

Find the missing value to the nearest tenth.
tan ___ = 45
Answer
A.
88.7º
B.
77.4º

C.
49.4º
D.
67.4º

Answer 1

i think its a

Answer 2

It is a, yes.

http://www.wolframalpha.com/input/?i=arctan%2845%29

The opposite of tangent is arctan or tan^(-1). You can calculate that with a ti-83 or wolframalpha. Just take the arctan of 45 and it gives you the angle.