Answers

2016-05-01T21:46:22+05:30
Cos sq A by sinsquare A + 1÷ sinA ka whole squaren= cossquare A+1÷sinsquareA×sin square A = cos square A +1 ÷sinsquareA= cossqureA by sin square A +1 sinsquare = cot square A cosecsquareA hence proved
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