An observer (O) spots a bird flying at a 42° angle from a line drawn horizontal to its nest. If the distance from the observer (O) to the bird (B) is 17,000 ft., how far is the bird (B) from its nest (N)?

11,375 feet

12,633 feet

14,862 feet

15,307 feet

Question

An observer (O) spots a bird flying at a 42° angle from a line drawn horizontal to its nest. If the distance from the observer (O) to the bird (B) is 17,000 ft., how far is the bird (B) from its nest (N)?


 11,375 feet

 12,633 feet

 14,862 feet

 15,307 feet

anonymous · Answer

@robtobey

anonymous · Answer

@phi can you help me please:)

zpupster · Answer

do you know definition of cosine and sin

zpupster · Answer

A convenient mnemonic for remembering the the definition of the sine, cosine, and tangent is 
SOHCAHTOA 
--sine equals opposite over hypotenuse,
-- cosine equals adjacent over hypotenuse, 
--tangent equals opposite over adjacent).

we know  hypotenuse is 17000

the side we are looking for(x) it opp or adj the angle 42 deg??