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If f(theta)=|{:(1,tantheta,1),(-tantheta...

If `f(theta)=|{:(1,tantheta,1),(-tantheta,1,tantheta),(-1,-tantheta,1):}|` then the set
`{f(theta):lt=thetalt(pi)/(2)}` is

A

`(2,oo)`

B

`(-oo,-2]`

C

`[2,oo)`

D

`(-oo,2]`

Text Solution

Verified by Experts

The correct Answer is:
C
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