if cosec A+Cot A= p , then proove that cOS A = p2 - 1 / p2+ 1 Share with your friends Share 44 Duke Biswass answered this cosec A + cot A = p ...1Now, cosec2A - cot2A = 1⇒cosec A + cot Acosec A - cot A = 1⇒pcosec A - cot A = 1⇒cosec A - cot A = 1p ....2Adding 1 and 2, we get2 cosec A = p + 1p⇒cosec A = p2+12p⇒sin A = 1cosec A = 2pp2+1⇒cos A = 1-sin2A = 1 - 4p2p2+12 = p4+1-2p2p2+12 = p2-12p2+12 = p2-1p2+1 177 View Full Answer