1. Solve for all values ofxin the given intervals:

tan^2 (x) - 3 = 0 for X E R

2.Describe how to use both an equivalent trigonometric identity and a diagram to prove that two trigonometric ratios are equivalent.

a)	Use this equivalent trigonometric expression: sin (x + 3/2) = -cosxb) Then create an example to demonstrate your answer for a) (choose a value forand solve both sides to prove that they are equal.)