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1.

A. $\sin θ = 1 + \cos^{2} θ$
B. $\sin θ = 1 + \cos^{2} θ$
C. $\sin θ = 1 + \cos^{2} θ$
D. $\sin θ = 1 + \cos^{2} θ$

Answer: Option B

Explanation:

sin²θ+cos²θ=1

So, sin²θ=1-cos²θ

(ans)

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