Posted by Anonymous on .
Benji is 55 ft from the base of his apartment building in New York when he spots his friend, Ronny, in the apartment building 150 feet up on the 15th floor. From where he is standing, what is the angle of elevation when he looks up at Ronny? Round to the nearest hundredth.

geometry 
Reiny,
tan Ø = 150/55 = ...
Ø = ....
Use your calculator to find Ø
make sure it is set to D
enter:
2ndF
tan
(
150
÷
55
)
=
to get 69.86...°