MCQ
tan 3A tan 2A - tan A
  •  tan 3A tan 2A tan A
  • B
     - tan 3A tan 2A tan A
  • C
     tan A tan 2A - tan 2A tan 3A - tan 3A tan A
  • D
    $0$

Answer

Correct option: A.
 tan 3A tan 2A tan A
(A) tan 3A tan 2A tan A

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