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In a triangle ABC ,angle A is greater than B.If the measures of angles Aand B satisfy the equation `3sinx-4 sin^(3)x-k=0,0ltklt1`, then the measure of angle C, is

A

`((-pi)/(10),(3pi)/(10))`

B

`((pi)/(10),(3pi)/(10))`

C

`((pi)/(10),(3pi)/(10))`

D

none of these

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The correct Answer is:
c
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