An airplane pilot over the Pacific sights an atoll at an angle of depression of 7°. At this time, the horizontal distance from the airplane to the atoll is 3,729 meters. What is the height of the plane to the nearest meter?
458 meters
454 meters
3,667 meters
3,701 meters
So I have,
tan(7degree) = x/3729 = 0.1228
But how would I get X?