Math, asked by VatsalSatija, 1 year ago

Solve the following equations: 5 cos 2x + 2 cos²x/2 + 1 = 0

Answers

Answered by Anshul201

3

cos2x=2cos^2x-1
cos53°=3/5

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Answered by 20012

0

cos 53 = 3/5 is the answer

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