\[\tan \left( \frac{\pi }{4}+\theta \right)-\tan \left( \frac{\pi }{4}-\theta \right)=\]

\[\tan \left( \frac{\pi }{4}+\theta \right)-\tan \left( \frac{\pi }{4}

1.	\[\tan \left( \frac{\pi }{4}+\theta \right)-\tan \left( \frac{\pi }{4}-\theta \right)=\]
A.	\[2\tan 2\theta \]
B.	\[2\cot 2\theta \]
C.	\[\tan 2\theta \]
D.	\[\cot 2\theta \]
Answer» B. \[2\cot 2\theta \]

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\[\tan \left( \frac{\pi }{4}+\theta \right)-\tan \left( \frac{\pi }{4}-\theta \right)=\]

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