Math, asked by sudhakhari1099, 10 months ago

Tanx.tan2x=1 value of cos2x

Answers

Answered by sprao53413

0

Answer:

Tan x tan 2x=1 implies tan2x=cot x=tan(90-x)

2x=90°-x

3x=90°

x =30°

Cos 2x=cos60°=1/2

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