Question

sin^2A+sin^2Acot^A=1​

Answer 1

Answer:

$\sin {}^{2} a + \sin {}^{2} a \cot {}^{2} a = \sin {}^{2} a + \sin {}^{2} a \frac{ \cos {}^{2}a }{ \sin {}^{2}a } \\ = \sin ^{2} a + \cos {}^{2} a = 1 \\ hence \: proved$