Two birds sit at the top of two different trees 17.8 feet away from one another. The distance between the first bird and a bird watcher on the ground is 37.4 feet.

What is the angle measure, or angle of depression, between this bird and the bird watcher?

© 2011 Jupiter Images Corporation
Answer

25.5°

28.4°

61.6°

64.5°

Question

Two birds sit at the top of two different trees 17.8 feet away from one another. The distance between the first bird and a bird watcher on the ground is 37.4 feet.

What is the angle measure, or angle of depression, between this bird and the bird watcher?

© 2011 Jupiter Images Corporation
 Answer

25.5°

28.4°

61.6°

64.5°

mathmate · Answer

|dw:1324859527589:dw|
Height of bird = 17.8
True (slant) distance from watcher to bird = 37.4
Angle theta = asin(17.8/37.4=28.4 degree