Question

Can someone help me with this? I've been trying to solve this practice problem for ages.

Answer 1

An observer (O) is located 900 feet from a building (B). The observer notices a helicopter (H) flying at a 49° angle of elevation from his line of sight. How high is the helicopter flying over the building?

Answer 2

tan(49)=x/900
*900 *900
900tan(49)=x/900
900tan(49)=x1
900tan(49)=x

H = 900tan49
H = 1035

The helicopter is flying 1035 feet over the building.

Answer 3

*in case anyone needs it