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nobillionaireNobley
#2. sin x (sin x + 1) = 0
sin x = 0 or sin x + 1 = 0
sin x = 0 or sin x = -1
[tex]x= sin^{-1}0 \ or \ x = sin^{-1}(-1) \\ x= 0, \ \pi, \ 2 \pi \ or \ x= \frac{3 \pi }{2} [/tex]