Ok, I have a few problems I just cant seem to understand.
1. Find the Exact Value of the Expression
I know your supposed to write tangent in terms of cosine but im completely lost.
2. Find all exact solutions (in simplest form) to the following equations.
a) 2cosxsinx +cosx = 0
b)sin2x = tanx
I tried on each, and failed miserably on each. Any help is appericiated.