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| 1. |
ta\begin{array}{l}{\frac{\tan \theta}{1-\cot \theta}+\frac{\cot \theta}{1-\tan \theta}=1+\sec \theta \csc \theta} \\ {\text { I Hint: Write the expression in terms of } \sin \theta \text { and } \cos \theta ]}\end{array} |
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