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Jonter
@Jonter
July 2022
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2sin2x=-2cos(3п/2+x)
как разложить (3п/2+x)?
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sangers
3π/2+х=3*180°/2+х=540°/2+х=270°+х cos(270°+x)=sinx
2*2*sinx*cosx=-2sinx
4*cosx=-2
cosx=-1/2
x=11/6π+2πk
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Answers & Comments
2*2*sinx*cosx=-2sinx
4*cosx=-2
cosx=-1/2
x=11/6π+2πk