Proving trigonometry

Cos@/(1+tan@) + sin@/(1-cot@) = sin@ + cos @


Need help in this proving question! Please help

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Originally Posted by ZGOON

Cos@/(1+tan@) + sin@/(1-cot@) = sin@ + cos @
Need help in this proving question! Please help

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Sorry, not an identity but rather can be an equation with few points, i.e., only valid at certain points:



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