MA L 7.2 Verifying Trigonometric Identities. Make the left side equal the right. Hints for Proving Identities. Select the more complex side of the = sign to work on. Use double & half-angle formulas is necessary to get all trig functions of the same angle (x)
Make the left side equal the right.
Here are three KEY techniques:
Using the Quadratic Formula
Example 3 1=1