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If (sin^2 phi+3sin phi+2)/(cos^2 phi)=1,...

If `(sin^2 phi+3sin phi+2)/(cos^2 phi)=1`, where `-90^@< phi <90^@`, then what is the value of `(cos 2 phi+sin3 phi+cosec2 phi)` ?

A

`(2+ sqrt3)/3`

B

`-(3+ 4 sqrt3)/6`

C

`(9+ 4 sqrt3)/6`

D

`-(3+ 2 sqrt3)/6`

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