Prove the following identities by choosing one side and manipulate until you arrive at theother side. Please show all steps.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section: Chapter Questions
Problem 49RE
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Prove the following identities by choosing one side and manipulate until you arrive at theother side. Please show all steps.

7. 2 cot 2r
= cot r-tan r
Transcribed Image Text:7. 2 cot 2r = cot r-tan r
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