Question

If sin θ + sin² θ = 1, then cos² θ + cos^4 θ = ..

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Answer 1

$Given, sinθ+sin2θ=1 \\⇒sinθ=1−sin2θ=cos2θ \\Therefore, cos2θ+cos4θ\\=cos2θ(1+cos2θ) \\ =>sinθ(1+sinθ) \\ =>sinθ+sin2θ \\ =>1</p><p></p><p>$

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Answer 2

Answer:

i know the answer i am solving the question on paper ,will edit the answer once i am done

Step-by-step explanation: