Prove that:
`(cos(60^(@)-A)+sin(30^(@)-A))/(cos(30^(@)-A)-sin(60^(@)-A))= cotA`

Explanation

To prove the equation

\[ \frac{\cos(60^\circ - A) + \sin(30^\circ - A)}{\cos(30^\circ - A) - \sin(60^\circ - A)} = \cot A, \]

we will simplify the left-hand side step by step.

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