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If 1-3(cot^(2)phi-cos^(2)phi)=sin^(2)phi...

If `1-3(cot^(2)phi-cos^(2)phi)=sin^(2)phi,0^(@)ltthetalt90^(@)` , then what is the value of `(2sinphi+cosphi)`?

A

A. `(2sqrt(3)+1)/(2)`

B

B. `2sqrt(5)`

C

C. `(sqrt(3)+2)/(2)`

D

D. `(sqrt(3)+1)/(2)`

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