If $A + C = B,$ then $\tan A\,\tan B\,\tan C = $
If $A + C = B,$ then $\tan A\,\tan B\,\tan C = $
- A
$\tan A\,\tan B + \tan \,C$
- B
$\tan \,B - \tan \,C - \tan \,A$
- C
$\tan A + \tan C - \tan B$
- D
$ - \,(\tan A\tan B + \tan C)$
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