Prove that Cos A - sin A + 1 whole up on cos A + sin A - 1 = tan A + sin A

Prove that Cos A - sin A + 1 whole up on cos A + sin A - 1 = tan A + s

1.	Prove that Cos A - sin A + 1 whole up on cos A + sin A - 1 = tan A + sin A
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