A car travels in a due northerly direction at a speed of 55 km/h. The traces of rain on the side windows of the car make an angle of 60 degrees with respect to the horizontal. If the rain is falling vertically with respect to the earth, what is the speed of the rain with respect to the earth?
◦ 48 km/h
◦ 95 km/h
◦ 58 km/h
◦ 32 km/h
◦ 80 km/h