A hot-air balloon is floating above a straight road. To calculate their height above the ground, the balloonists simultaneously measure the angle of depression to two consecutive mileposts on the road on the same side of the balloon. The angles of depression are found to be 15 degrees and 17 degrees. How high (in feet) is the balloon?________

Question

turingtest · Answer

always good to draw the picture in a situation like this|dw:1331327479856:dw|now we need to use geometry and trig to solve these triangles