## Tan 3A Formula – Proof and Examples

Here you will learn what is the formula of tan 3A in terms of A with proof and examples based on it. Let’s begin – Tan 3A Formula The formula of tan 3A is $$3 tan A – tan^3 A\over 1 – 3 tan^2 A$$. Proof : We have, tan (A + B) = \(tan …