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If C=2 cos theta, then the value of the ...

If `C=2 cos theta`, then the value of the determinant
`Delta= |[C,1,0],[1,C,1],[6,1,C]|` is

A

`(sin 4theta)/(sin theta)`

B

`(2 sin^(2)2theta)/(sin theta)`

C

`4 cos ^2 theta(2 cos theta-1)`

D

none of these

Text Solution

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The correct Answer is:
D
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