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The value of theta lying between 0 and p...

The value of `theta` lying between 0 and `pi/2` and satisfying `|[1+sin^2theta,cos^2theta,4sin4theta],[sin^2theta,1+cos^2theta,4sin4theta],[sin^2theta,cos^2theta,1+4sin4theta]|=0`

A

`(7pi)/(24)and (11pi)/(24)`

B

`(7pi)/(24)and (5pi)/(24)`

C

`(5pi)/(24)and (pi)/(24)`

D

none of these

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A
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sin^2theta+cos^4theta=cos^2theta+sin^4theta

OBJECTIVE RD SHARMA-TRIGONOMETRIC RATIOS AND IDENTITIES-Exercise
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