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

25.5°

64.5°

28.4°

61.6°

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

 25.5°

 64.5°

 28.4°

 61.6°

anonymous · Answer

attachment

anonymous · Answer

@hba

ghazi · Answer

$$\cos x =\frac{ 17.8 }{ 37.4 }$$

ghazi · Answer

solve for x

hba · Answer

trigonometry.. can u use cos function ??

Cos A = adj/ hyp..

hba · Answer

Divide the right hand side first.

anonymous · Answer

@ganeshie8

hba · Answer

Now take it cos inverse

hba · Answer

\large x = \cos^{-1}(0.47593582887701) = ??

hba · Answer

61.57970074532342906961 so 61.6