Math, asked by lakshyas910, 11 months ago

if tanθ+tan4θ+tan7θ=tanθtan4θtan7θ then cos 12θ=

Answers

Answered by amrita230905

1

Answer:

Step-by-step explanation:

we know, that

tanA+tanB+tanC=tanA.tanB.tanC if A+B+C=nπ

Hence, 12θ=nπ

θ=

12

nπ

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