Home > APCALC > Chapter 4 > Lesson 4.5.1 > Problem 4-175
4-175.
Rewrite each of the following expressions using a single trigonometric function. You may wish to review your trigonometric identities from Chapter 1.
Common Trigonometric Identities
Reciprocal | Pythagorean |
Angle Sum | Double Angle |
Double Angle identity (factor first).
Sum and Difference (Angle Sum) identity.
Factor first.
Start by rewriting
and as fractions. You will use more than one identity.