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  • If alpha and beta are complementary angles then sin²alfa +sin²beta=?

If alpha and beta are complementary angles then sin²alfa +sin²beta=?

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eginarrayl extGiven that,\ alpha+eta=90^circ\ sin^2alpha+sin^2eta\ =sin^2alpha+left(sinleft(90-alpha ight) ight)^2\ =sin^2alpha+cos^2alpha\ =1endarray

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Deependra Verma

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