anonymous
  • anonymous
Find the sum of sin2x and sinx
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
I don't understand the question. Don't you just add them together since that's what "sum" means?
anonymous
  • anonymous
its trig identities
anonymous
  • anonymous
Do you want it only in terms of sin(x)? Here's a list of identities. http://tutorial.math.lamar.edu/pdf/Trig_Cheat_Sheet.pdf

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across
  • across
The best you can do is simplify the expression:\[ \sin2x+\sin x\\ 2\sin x\cos x+\sin x\\ \sin x(2\cos x+1) \]
anonymous
  • anonymous
yea in terms of sinx

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