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Grade 12th passTrigonometry

Solve the equation : Tan x + Tan 2x + Tan 3x = 0
(Aakash target 1 / ex 3.7 / questio number 113)

Profile image of Yuvc
8 Years agoGrade 12th pass
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1 Answer

Profile image of Deepak Kumar Shringi
8 Years ago
Dear student

tanx+tan2x+tan3x=0

(tanx+tan2x)(1-tanxtan2x)/((1-tanxtan2x)+tan3x=0

tan3x(1-tanxtan2x)+tan3x=0

so we get

either tan3x=0 ortanxtan2x=2

Solve for x....

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