Find cos 2a if 4 sin a - COS a = 3. 2 sin a + COS a

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Find cos 2a if
4 sin a
-
COS a
= 3.
2 sin
a
+
COS a
Transcribed Image Text:Find cos 2a if 4 sin a - COS a = 3. 2 sin a + COS a
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