anonymous
  • anonymous
Please help, cos2x + cos3x sinx = 1/2
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
cos^2x = 1-sin^2x. So, substitute and see what you get.
Mertsj
  • Mertsj
\[\cos ^{2}x+\cos ^{3}xsinx=\frac{1}{2}\]
Mertsj
  • Mertsj
Is that the equation?

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Mertsj
  • Mertsj
Or is it \[\cos2x+\cos3xsinx=\frac{1}{2}\]
anonymous
  • anonymous
Your version may be the right one as I can't see how the "former one" I interpreted could hold true.

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