prove algebraically sinA + cosAcotA = cscA I tried this but I can only get this far and I am wondering how I am going wrong? sinA + cosAcotA = cscA sinA + cosA(cosA/sinA) sinA + cos^2A/sinA sinA + 1-sin^2A/sinA please help
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sinA + cos^2A/sinA Taking the LCM Sin^2A + cos^2A= cosecA * Sin A But cosec A= I/sin A so sin^2A+ cos^2A= 1 which we already know which means that the assumption you started off with is correct.
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