Since the solution to 22 from 5.5 chapter was answered, more than 208 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 22 from chapter: 5.5 was answered by , our top Calculus solution expert on 03/15/18, 04:43PM. This full solution covers the following key subjects: . This expansive textbook survival guide covers 85 chapters, and 8847 solutions. Precalculus was written by and is associated to the ISBN: 9780618643448. This textbook survival guide was created for the textbook: Precalculus, edition: 7. The answer to “In Exercises 1922, use a double-angle formula to rewrite the expression.” is broken down into a number of easy to follow steps, and 11 words.