CPM Homework Banner

Home > PC3 > Chapter 8 > Lesson 8.3.1 > Problem 8-88


A technique similar to rationalizing the denominator can be used to rewrite some trigonometric expressions in different forms. For example, multiply numerator and denominator of by 1 – cos(θ) to rewrite the expression with one term in the denominator. Then rewrite the expression in terms of other trigonometric functions. Homework Help ✎

Use a Fundamental Pythagorean Identity and substitute.