For cos z cos 3z - sin z sin 3z =0, use an addition or subtraction formula to simplify the equation and then find all solutions of the equation in the interval [0, x). and 14 with z1 <12
For cos z cos 3z - sin z sin 3z =0, use an addition or subtraction formula to simplify the equation and then find all solutions of the equation in the interval [0, x). and 14 with z1 <12
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 64E
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