Given: cosA= -1, sin x = - 12, A is in the third quadrant, and x is in the fourth quadrant; evaluate cos 2x. 119/169 -119/169 -11/13

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section: Chapter Questions
Problem 23T
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Given: cosa= -, sin x = -
12, e is in the third quadrant, and x is in the fourth quadrant; evaluate cos 2x.
119/169
-119/169
O -11/13
Transcribed Image Text:Given: cosa= -, sin x = - 12, e is in the third quadrant, and x is in the fourth quadrant; evaluate cos 2x. 119/169 -119/169 O -11/13
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