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प्रश्न
sin2θ + sin2(90 – θ) = ?
विकल्प
0
1
2
`sqrt(2)`
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उत्तर
1
Explanation:
(sin(90 – θ))2 = (cosθ)2
sin2(90 – θ) = cos2θ ...(1)
sin2θ + cos2θ = 1
∴ sin2θ + sin2(90 – θ) = 1 ...[From (1)]
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