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The value of theta , lying between th...

The value of ` theta ` , lying between ` theta =0 and theta=(pi)/(2)` and satisfying the equation . `|{:(1+ cos^(2 ) theta , sin^(2) theta , 4 sin 4 theta ),(cos^(2) theta , 1+sin^2 theta , 4 sin 4 theta ),(cos^(2) theta , sin^(2) theta , 1+ 4 sin 4 theta ):}|=0 , is `

A

`(7 pi)/(24)`

B

`(5 pi)/(24)`

C

`(13 pi)/(24)`

D

`(pi)/(24)`

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A
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