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Let f(theta)=(1+sin^(2)theta)(2-sin^(2)t...

Let `f(theta)=(1+sin^(2)theta)(2-sin^(2)theta)`. Then for all values of `theta`.

A

`f(theta)gt (9)/(4)`

B

`f(theta)lt 2`

C

`f(theta)gt (11)/(4)`

D

`2 le f (theta)le (9)/(4)`

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