if cos A-sin A=m and cos A+sin A=n ,show that m2+n2/m2-n2=-1/2secA.cosecA= cotA+tanA/2.
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Step-by-step explanation:
Who are u to ask questions to others but no probs I'll give u the answer ..... the answer is that is a fool to ask questions
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Divide both equation from left hand side and right yand side by zero then LHS =RHS
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