Precalculus Name Period Date 4.09 Trig Proof Review 1. What are the three (original) Pythagorean Properties? 2. What are the reciprocal properties? 3. What are the quotient properties? These are the types of problems you can expect to see on the test: Prove each identity. Show all steps and justify each step. 1. cos x cscx sec x cotx 2. sec? x - 1 1-cos2 x sec2 x@Write each of the following in terms of sine and/or cosine. @ Cancel anything that can be canceled. 3 Multiply and get a final answer. If needed, transform your final answer to NOT include fractions. For example, 1/cos x can be rewritten as sec x. Or cosx/sinx can be written as cotx. cos x 4 sing x+cos" x