sec(square) 36-cot(square) 54
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sec(square)36-cot(square)54
=sec(square)36-cot(square)(90-36)
=sec(square)36-tan(square)36
=1(using identity.tan(square)+1=sec(square))
=sec(square)36-cot(square)(90-36)
=sec(square)36-tan(square)36
=1(using identity.tan(square)+1=sec(square))
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