Question

prove that 1-cos square theta=sin square theta

Answer 1

Hope this helped you....

Answer 2

$hey \: mate \: here \: is \: ur \: ans \\ 1 - \cos {}^{2} ( \alpha ) = \sin {}^{2} ( \alpha ) \\ put \: any \: valve \: of \: \alpha \\ suppose \: \alpha = 30degree \\ 1 - 3 \div 4 = 1 \div 2 \\ 1 \div 2 = 1 \div 2 \\ hence \: proved$