\frac{\tan a}{1-\cot a}+\frac{\cot a}{1-\tan a}=1+secacoseca
You asked:
Solve the equation \(\frac{\tan\left( a \right)}{1 - \cot\left( a \right)} + \frac{\cot\left( a \right)}{1 - \tan\left( a \right)} = 1 + \sec\left( a \right) \cdot \csc\left( a \right)\) for the variable \(a\).