Q.#15 Please prove the following trig identities/equalities. To do so, start with LHS (or RHS) and get RHS (or LHS). If easier, ok to work on both sides BUT don't intermix the sides! a) cos 20-1-2 sin ²0 b) 1-cos20 cose =2 tanesine Final Answer See at left! Page 11 of 15 Final Answer

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
Section8.4: Roots Of A Complex Number
Problem 42PS
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Q. #15 Please prove the following trig identities/equalities. To do so, start with LHS (or RHS) and get RHS
(or LHS). If easier, ok to work on both sides BUT don't intermix the sides !
a) cos 20-1-2 sin ²0
b)
1-cos 20
cose
= 2tan sin
Final Answer
See at left!
Page 11 of 15
Final Answer
Transcribed Image Text:Q. #15 Please prove the following trig identities/equalities. To do so, start with LHS (or RHS) and get RHS (or LHS). If easier, ok to work on both sides BUT don't intermix the sides ! a) cos 20-1-2 sin ²0 b) 1-cos 20 cose = 2tan sin Final Answer See at left! Page 11 of 15 Final Answer
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