Math, asked by SomyashreeNanda, 2 months ago

If sin A + sin2 A = 1, find the value of cos2A +cos 4A

Answers

Answered by ns3991813

1

Answer:

sinA+sin^2A=1

sinA=1-sin^2

sinA=cosA

Now,

cos^2A+cos^2A.cos2A

sinA+Sin^2A

=1

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