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11 Apr 2020
height of a balloon A hot-air balloon is floating above a straight road. To estimate 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 
and 
. How high is the balloon?
height of a balloon A hot-air balloon is floating above a straight road. To estimate 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 and . How high is the balloon?
Nestor RutherfordLv2
21 May 2020
and 
are located on the side of a hill that is inclined 
to horizontal. The observer at 
determines the angle of the elevation to a hot-air balloon to be 
. At the same instant the observer at 
. If 
down the hill from 
, and that to the other is 
. How far apart are the cars?
and 
, which are 
apart. When the satellite is on one side of the two stations, the angles of elevation at 
and 
respectively.