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Prove that 1+cosx=2cos^2(x/2) and 1-cosx=2sin^2(x/2) trigonometric identites
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#1+cosx=2cos^x/2 and 1-cosx=2sin^x/2 trigonometric identites proof
1+cosx=2cos^x/2 and 1-cosx=2sin^x/2 trigonometric identites proof
thank you watch this
#11thmath #12thmath #iit
#1+cosx=2cos^x/2 and 1-cosx=2sin^x/2 trigonometric identites proof
1+cosx=2cos^x/2 and 1-cosx=2sin^x/2 trigonometric identites proof
thank you watch this
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