Pre-Calculus Math 40S - Trigonometry II Lesson 2
Pre – Calculus Math 40S: Explained! www.math40s.com 154 TRIGONOMETRY II - LESSON TWO PART I MULTIPLICATION & DIVISION IDENTITLES For each of the following, write an algebraic proof. 1) Prove: cot tan 1x x = 2) Prove: csc ......