question archive How do you prove ## [(1)/(1-sinx)]+[(1)/(1+sinx)]=2sec^2x##?

How do you prove ## [(1)/(1-sinx)]+[(1)/(1+sinx)]=2sec^2x##?

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How do you prove ## [(1)/(1-sinx)]+[(1)/(1+sinx)]=2sec^2x##?

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