This is another application that I didn't understand
A blimp, suspended in the air at a height of 500 ft, lies directly over a line from Soldier Field to the Planetarium on Lake Michigan. If the angle of depression from the blimp to the stadium is 32 degrees and from the blimp to the planetarium is 23 degrees, fin the distance between soldier Field and the Planetarium.
1 answer
1978.09