Find all solutions to the equation below in the interval (−1π,0]. Give all answers as exact values in a list, separated by commas. 2cos(t)cos(−3t)−2sin(t)sin(−3t)=−√2 t =

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.2: Trigonometric Equations
Problem 60E
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Find all solutions to the equation below in the interval (−1π,0].
Give all answers as exact values in a list, separated by commas.

2cos(t)cos(−3t)−2sin(t)sin(−3t)=−√2

t = 

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