Question

An observer (O) spots a bird flying at a 55° angle from a line drawn horizontal to its nest. If the distance from the observer (O) to the bird (B) is 15,000 ft., how far is the bird (B) from its nest (N)?

Answer 1

This looks like a right triangle trig problem.

Do you know the right triangle trig ratios?

See attachment. @justingresham14

Answer 2

Which trig function is adjacent leg over hypotenuse?