2 cos z = 2 cos² (-)- Prove that sin z tan +2 cos z

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.4: Values Of The Trigonometric Functions
Problem 37E
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Prove that sin z tan + 2 cos z = 2 cos² (-).
Transcribed Image Text:Question 2 Prove that sin z tan + 2 cos z = 2 cos² (-).
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