Question

If cos theta+cos^2 theta = 1 , the value of sin^2 theta+ sin^4 theta is​

Answer 1

Answer:

Given, sinθ+sin2θ=1

⇒sinθ=1−sin2θ=cos2θ

Therefore, cos2θ+cos4θ=cos2θ(1+cos2θ)

=sinθ(1+sinθ)

=sinθ+sin2θ

=1

Step-by-step explanation:

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