Math, asked by KhushiShashibhusan, 10 months ago

cosA=root1+cos2A/2,find the value of cos 30;given that cos 60=1/2

Answers

Answered by gauravprakash231

3

Answer:

cos2A=2cos^2A-1

so 1+ cosA=2cos^2A/2 all are in root

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