Prove that, for all values of : a. (1 + sin ) 2 + cos 2
Question:
Prove that, for all values of θ:
a. (1 + sin θ)2 + cos2 θ ≡ 2(1 + sin θ)
b. cos4 θ + sin2 θ ≡ sin4 θ + cos2 θ
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a To prove the identity 1 sin cos 21 sin we expand the left sid...View the full answer
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Related Book For 
Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS
ISBN: 9781292183398
1st Edition
Authors: Greg Attwood
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