Question

Last problem. Can someone check to see if I did it correctly?
Two birds sit at the top of two different trees 57.4 feet away from one another. The distance between the second bird and a bird watcher on the ground is 49.6 feet.

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

Choices:

30.2
59.8
40.8
49.2

Answer 1

I got 40.8

Answer 2

40.83 degrees

The reverse of a tangent is referred to as both the inverse tangent and the arc tangent. So on a calculator, it will either show up as tan^-1, atan, or arctan. You also want to make sure that you mode is in degrees, not radians.

Talk with your teacher if you're still unsure b/c it's important :-)

Answer 3

http://www.ecalc.com/

Answer 4

http://web2.0calc.com/

Answer 5

Ok thank you so very much for your help and information. I appreciate it.

Answer 6

angle =tan −1 (49.6/57.4) = 40.83

Answer 7

No problem

Answer 8

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Answer 9

http://www.zappablamma.com/zb/wp-content/uploads/2010/12/biggest-fan-sm.jpg
@Pyromancer

Answer 10

Lol @jdoe0001