Mathematics, 17.10.2021 18:20 midsky

Prove that $\frac{1}{ \csc(a) - \ \cot(a) } - \frac{1}{ \sin(a) } = \frac{1}{ \sin(a) } - \frac{1}{ \ \csc(a) + \cot(a) }$
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Prove that $\frac{1}{ \csc(a) - \ \cot(a) } - \frac{1}{ \sin(a) } = \frac{1}{ \sin(a) } - \frac{1}{ \ \csc(a) + \cot(a) }$
Help please?