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If ` sin (x) = -5/6`, and `x` is in quadrant IV, determine the exact value of each of the following. Use fractions and radicals only, no decimals. You do not need to rationalize the denominator.

`sin (x/2) =`  

`cos (x/2) =`  

`tan (x/2) =`  

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   x  √  (   ) π ∞ DNE
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