Question 1138219
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{{{sin(x)^3-sin(x) = 0}}}
{{{sin(x)*(sin(x)^2-1) = 0}}}
{{{sin(x) = 0}}} or {{{sin^2(x)-1 = 0}}}
{{{sin(x) = 0}}} or {{{sin(x) = 1}}} or {{{sin(x) = -1}}}<br>
ANSWER: x = k*(pi/2)