1.

If \[\tan \,(A+B)=p,\,\,\tan \,(A-B)=q,\] then the value of \[\tan \,2A\] in terms of p and q is [MP PET 1995, 2002]

A. \[\frac{p+q}{p-q}\]
B. \[\frac{p-q}{1+pq}\]
C. \[\frac{p+q}{1-pq}\]
D. \[\frac{1+pq}{1-p}\]
Answer» D. \[\frac{1+pq}{1-p}\]


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