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anonymous
 3 years ago
ʃsin 3x sin 6x dx
anonymous
 3 years ago
ʃsin 3x sin 6x dx

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ajprincess
 3 years ago
Best ResponseYou've already chosen the best response.1r u familiar with this formula? cosccosd=2sin(c+d)/2sin(dc)/2? here c=A+B and d=AB

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0hmmm I'd prefer to use identities. I can't seem find an identity for sin 6x

phi
 3 years ago
Best ResponseYou've already chosen the best response.0how about the double angle sin(2x) = 2 sin(x) cos(x)

ajprincess
 3 years ago
Best ResponseYou've already chosen the best response.1u can use the one i showed. cosccosd=2sin(dc)/2sin(c+d)/2 c+d/2=6x cd/2=3x u can find c and d from this

ajprincess
 3 years ago
Best ResponseYou've already chosen the best response.1(c+d)/2=6x (cd)/2=3x
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