Find the value of 3sinx-4cos^3x.If sin x=1/2.
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sinx = 1/2
x= 30
3 sin30 - 4cos³30
= 3/2 - 4(√3/2)³
= 3/2- 4(3√3/8)
= 3/2 - 3√3/2
= 3 - 3√3/2
= -1.09
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