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2 Attachments
The person here explains it well
which answer is it though?

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Other answers:

um, now that you mention it, I don't see an answer. I'll go look for it
i saw those i cant seem to find the answer that matchs in the attactment
I don't know. I called some people to help, try to figure it out. Sorry and good luck!
can you guys help please?
sin(3x) = sin(x + 2x) = sin(x)cos(2x) + cos(x)sin(2x)
@trollpower which answer is that?
your ques is sin(3x)+Cos(3x)
You just have to remember two formulas sin(a+b) = sin(a)cos(b) + cos(a)sin(b) cos(a+b) = cos(a)cos(b) - sin(a)sin(b) Now solve it and get your answer
i don't know howw

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