anonymous
  • anonymous
Please can anyone help me solve cos2x=sinx?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Use the double angle expression for the cosine to get cos 2x = sin x cos2(x) - sin2(x) = sin(x) Then replace cos2(x) by 1 - sin2(x) to get (1 - sin2(x)) - sin2(x) = sin(x)
anonymous
  • anonymous
lol. right i understand that but its not proofing. its getting exact answers .The answers are pie/6 5pie/6 and 3pie/2
anonymous
  • anonymous
oh

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anonymous
  • anonymous
yeah so pretty much your trying to solve cos2x-sinx=0

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