Introduction

In this lesson as in the one before we will be using formulas, specifically, power-reducing formulas and half-angle formulas to rewrite trigonometric functions in a more convenient form.

At the end of this lesson, student will be able to:

  • Use power-reducing formulas to find exact values of trigonometric functions
  • Use power-reducing formulas to rewrite trigonometric expressions
  • Use half-angle formulas to find exact values of trigonometric functions
  • Use half-angle formulas to rewrite trigonometric functions

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