Question

Prove that tan3x =

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Answer 1

Answer:

tan3x=tan(2x+x)

Using sum of angle identity

tan(2x+x)=(tanx+tan2x)/1-tanx tan2x

tan2x=2tanx/1-tan²x

tan(2x+x)=(tanx+2tanx/1-tan²x)/1–2tan²x./1-tan²x=(3tanx-tan³x)/1–3tan²x

tan3x =(3tanx -tan³x)/1- 3tan²x

Answer 2

Answer:

3x=

x=3

There for x=3

Step-by-step explanation:

I hope this helps you