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Mathematics
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OpenStudy (luigi0210):
Find the general anti-derivative:
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OpenStudy (primeralph):
Double angle formula.
OpenStudy (anonymous):
Apply the half angle formula to the Sin(2x) Sin(2a)=2Sin(a)Cos(a)
OpenStudy (anonymous):
Or, double angle. Whatever it's called!
sammixboo (sammixboo):
Yep, double angle... I think
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