Math, asked by raj90iwi, 1 year ago

prove that pls

tanx tan2x tan3x = tan3x - tan2x - tanx

repeated with 11th class trigonometry

Answers

Answered by amarraj79

0

Answer:

Apply formula of tan(a+b+c) =(tan+tanb+tanc-tana. tanb. tanc) /1-tana tanb. - tanb. tanc-tana. tanc

Put a=3x,b=-2x,c=-x

a+b+c=0

therefor,

tan 3x. tan 2x. tanx=tan3x-tan2x-tanx

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