Question 1169009
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<pre>

sin^3(x) = sin(x)


sin^3(x) - sin(x) = 0


sin(x)*(sin^2(x)-1) = 0


sin(x)*(sin(x)-1)*(sin(x)+1) = 0


<U>ANSWER</U>.  In the given interval, the solutions are  x= 0 degrees;  90 degrees;  180 degrees  and 270 degrees.
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Solved.