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28
Answer:
Answer=1.
Step-by-step explanation:
Given, sinθ+sin^2θ=1
⇒sinθ=1−sin^2θ
=cos^2θ
Therefore,
cos^2θ+cos^4θ
=cos^2θ(1+cos^2θ)
=sinθ(1+sinθ)
=sinθ+sin^2θ=1
Answered by
0
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