A hot-air balloon is floating above a straight road. To calculate their height above the ground, the balloonists simultaneously

Question

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 26° and 29º. How high (in feet) is the ballon?

Kunduz · Accepted Answer

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