'**SUMMARY**
Get corresponding Hue value of the given RGB values
**PARAMETERS**
* *tuple* - an rgb tuple to convert to HSV.
**RETURNS**
floating value of Hue ranging from 0 to 180
**EXAMPLE**
>>> i = Image("lenna")
>>> hue = Color.getHueFromRGB(i[100,300])'

@classmethod
def getHueFromRGB(cls, tuple):

    h_float = colorsys.rgb_to_hsv(*tuple)[0]
    return (h_float * 180)
