if sinθ + sin2 θ = 1 then the value of cos2 θ + cos4 θ is ______ A) -1 B) 1 C)0 D) 2
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if sinθ + sin2 θ = 1 then the value of cos2 θ + cos4 θ is ______ A) -1 B) 1 C)0 D) 2
Step-by-step explanation:
answer is 2
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