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The least difference between the roots, ...

The least difference between the roots, in the first quadrant `(0 <= x <= pi/2),` of the equation `4 cos x(2-3 sin^2 x)+(cos 2x+1)=0, `is

A

equal to ` (pi)/(2)`

B

` gt (pi)/(10) `

C

` lt (pi)/(2) `

D

` lt (pi)/(3) `

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The correct Answer is:
B, C, D
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