Find Sin, Cos, Tan from Lengths of Triangle Sides

A pilot is practicing emergency landing techniques and is tasked with landing on a highway. In order to achieve a successful landing the pilot must consistently communicate with an airway traffic controller. The airway traffic control must use geometry in order to help the pilot land the airplane safely.

The pilot tells the traffic controller that his altitude is $2,445$ meters. The airway traffic controller knows that the plane's angle of elevation is $20^\circ$, but he needs to know the distance of the plane in order to help it land safely.