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Hey everyone,

I have to solve this equation below:

1+cos(x)+cos(2x)=sin(x)+sin(2x)+sin(3x)

After too many simplifications and factorizations, I got to: (I hope it's right tho)

(2sinxcosx)(2cosx+1)=cos(x)(1+2cosx)

So yeah, I factorized everything pretty much, but what step to take after that, so I can solve this equation ??

Thanks,

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# Trig equation

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