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If `cosx = (-1)/2` and `pi prec x prec (3 pi)/2`, then the value of `4 tan^2 x+3 cosec^2 x` is:
यदि `cosx = (-1)/2` है तथा `pi prec x prec (3 pi)/2`,है तो `4 tan^2 x+3 cosec^2 x` का मान क्या होगा ?

A

16

B

8

C

4

D

10

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