The sonar of a navy cruiser detects a submarine that is 4000 feet from the
cruiser. The angle between the water line and the submarine is 34°. How deep is
the submarine?
An aerial photographer is in an airplane at an altitude of 10 km and sees two towns
directly east of the plane. The angles of depression to the towns are 25° and 60°.
How far apart are the two towns?
On a baseball diamond the bases are 90 ft apart. What is the distance from home
plate to second base in a straight line?
The angle of depression from the top of a 320 foot office building to the top of a
200 foot office building is 55. How far apart are the two buildings?
A surveyor standing 48.0 m from the base of a building measures the angle to the
top of the building and finds it to be 37.4 o . The surveyor then measures the angle
to the top of a clock tower on the building, finding that it is 45.6 o . Find the height
of the clock tower.
A helicopter is sighted at the same time by two ground observers who are 3 mi
apart on the same side of the helicopter. They report the angles of elevation as
20.5 o and 27.8 o . How high is the helicopter?