I use this worksheet in my Pre-Calculus classes to study (as a whole class) for the Trig Proof quiz. In my class, this activity is called "Check Yo' Skills." Students need to
-Write the trig expression as the sine, cosine, or tangent of an angle
-Simplify the trig expression to a single term
-Prove the trigonometric identity
-Find the exact value of each trig expression using a sum or difference identity
-Find all solutions in the interval zero to 2*pi without using a calculator bu giving exact