Question

if sin²27 + sin²θ = 1 ,then θ = _____ ​

Answer 1

Answer:

θ = 63°

Step-by-step explanation:

sin²27 + sin²θ = 1

cos²(90 - 27) + sin²θ = 1

cos²63 + sin²θ = 1

So, as we know cos²θ + sin²θ = 1

Thus, cos²63 + sin²63 = 1

So, θ = 63°

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