A camel sets out to cross the desert, which is 21.9 km wide in the north-south direction. The camel walks at the unifrom speed 3.51 km/hr along a straight line in the direction 49.6° north of East.
A) How long will it take the camel to cross the desert? Answer in units of hr.
B) Calculate the camel's eastward displacement while he crosses the desert. Answer in units of km.