Question

tan 3x +tan x = 2 tan2x​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

We have,

tan3x=tan(2x+x)

or, tan3x=

1−tan2x.tanx

tan2x+tanx

or, tan3x−tan3x.tan2x.tanx=tan2x+tanx

or, tan3x−tan2x−tanx=tan3x.tan2x.tanx.