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Question

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Answer 1

Sinx = 2sinxcosx
Sinx - 2sinxcosx = 0
Sinx (1-2cosx) = 0
Sinx=0 Cosx=1/2
X=pi k, kэz X=+-pi/3 + 2pi k, kэz

X= -pi/3
X= pi/3
X= 0