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If A = [( 1, cos theta , 1,),( - cos the...

If `A = [( 1, cos theta , 1,),( - cos theta ,1,cos theta ),( -1 , - cos theta ,1)]` where ` 0 le theta le 2 pi` then …..

A

`(2,oo)`

B

`(2,4)`

C

[2,4]

D

[-2,2]

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The correct Answer is:
C
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