Izzie is watching a hot-air balloon at a festival. She is standing 21 meters away from a tent which is directly beneath the balloon. If the angle of elevation from Izzie to the balloon is 43 degrees, find the height at which the balloon is sailing. Round to the nearest tenth.
Calculate the height of the balloon.
a) 30.6m
b) 31.8m
c) 32.7m
d) 33.5m