Question

sin^2A+sin^2Acot^A=1​

Answer 1

Answer:

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Answer 2

Answer:

$= \sin {}^{2} a+ \sin {}^{2} a \cot {}^{2} a \\ = \sin {}^{2} a(1 + \cot {}^{2} a) \\ = \sin {}^{2} a \times \cosec {}^{2} a \\ = sin {}^{2} a \times 1 \div sin {}^{2} a \\ = 1 \\ \\ \\ \\ proved$

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