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If [0,pi//2)rarr R is defined as f(0)=|...

If `[0,pi//2)rarr R` is defined as
`f(0)=|[[1, tantheta, 1],[-tantheta, 1, tantheta],[-1 ,-tantheta, 1]]|`

A

`(2,infty)`

B

`(-infty,-2]`

C

`[2,infty)`

D

`(-infty,2]`

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