If sin A= 1 find cos 2A.
Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter8: Complex Numbers And Polarcoordinates
Section8.3: Products And Quotients In Trigonometric Form
Problem 70PS
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If sin A= 1/sqrt5 find cos2A
![If sin A=
1
find cos 2A.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffcc5dc75-a9ef-435c-baa2-c703da48e45d%2Fdc27601a-a4e1-4fc3-a737-a6e5e9764141%2Fm1apta.jpeg&w=3840&q=75)
Transcribed Image Text:If sin A=
1
find cos 2A.
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