Math, asked by shivabnagally5901, 11 months ago

What is the value of Tan3x.tan2x+tanx

Answers

Answered by krishtiwari07
2

Answer:

From 3x = 2x + x

Applying tan on both sides..

tan3x = tan (2x+x)

tan3x = (tan2x+tanx)/1-tan2x tanx

(1-tan2x tanx)tan3x = tan2x+tanx

tan3x - tanx tan2x tan3x = tan2x+tanx

tanx tan2x tan3x = tan3x-tan2x-tanx

Hence it is proved..

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