Question

sin? 29° + sin? 61 = ​

Answer 1

We should know a few trigonometric identity rules before solving the problem l.

Here, sin (90 - θ) = cosθ

cos (90 - θ) = sinθ

Now, sin²29 + sin²61

= (sin29)² + sin²61

= {sin (90 - 61)}² + sin²61

= (cos61)² + sin²61

= cos²61 + sin²61

= 1,

since sin²θ + cos²θ = 1

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Answer 2

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