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anonymous
 3 years ago
prove THAT
sin3x=cos3x
anonymous
 3 years ago
prove THAT sin3x=cos3x

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.Sam.
 3 years ago
Best ResponseYou've already chosen the best response.0Start by \[\sin(3x)=\sin(2x+x)\] Then use the sum to difference formula

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0are there any values setfor this question? sin 3x = cos 3x only when tan 3x =1

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0but not a complete answer

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0oh. okay. sub x=0 into the eq and see what u get

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0X is a angle not a variable

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0In this case, since the question is asking for the [[proof]], not the solution, i don't see how you can get it, without setting the angles into set angles, like \(\frac{\pi}{12}\) rad

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i can give you a hint..!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0in the case where you need the solution, sin 3x = sin (903x) and use the general formula, \(3x=n\pi + (1)^n (903x)\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0that is the solution, not the proof though. So i don't think I gave any help into solving that question. note: \(n \in N\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0u wanna calculate the value of x ?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0just find the vale of "X"

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0sin 45 = cos 45 sin(3*15) = cos(3*15) so x=15 thus sin3x=cos3x your welcome
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