Question

tan3a in terms of a?
answer it carefully

Answer 1

Trigonometric function of tan 3A in terms of tan A is also known as one of the double angle formula.


If A is a number or angle then we have, tan 3A = 3tanA−tan3A1−3tan2A3tanA−tan3A1−3tan2A


Now we will proof the above multiple angle formula step-by-step.

Proof: tan 3A

= tan (2A + A)