2 1-tan ² x 2 1+ tan² x 2 = cos²x - sin² x
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 41E
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![1- tan² x
1+tan² X
=
cos² x - sin² x
I](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa3768902-5334-4d8e-9fd6-2c6a872eefc7%2F86bea01f-0fe7-4c19-87b0-a38dba9ce217%2F1eit06h_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1- tan² x
1+tan² X
=
cos² x - sin² x
I
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