Verify the following trigonometric identities

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 31E
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Verify the following trigonometric identities

1-tan20
= 1- 2sin? e
%3D
I+tan20
Transcribed Image Text:1-tan20 = 1- 2sin? e %3D I+tan20
1+cos 0
CSc e
%3D
sin30
1-cos0
Transcribed Image Text:1+cos 0 CSc e %3D sin30 1-cos0
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