Prove that (cosectheta - cot theat)2 = 1-cos theta divided by 1+cos theta
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Step-by-step explanation:
1-cos/1+cos
=(1-cos)(1-cos)/(1+cos)(1-cos)
=(1-cos)²/1-cos²
=(1-cos)²/sin²
=(1-cos/sin)²
=(cosec-cot)²
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