A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 4 mi apart, to be x = 31° and y = 49°, as shown in the figure. (Round your answers to two decimal places.) a) Find the distance of the plane from point A. b) Find the elevation of the plane.
tan(31)=x/4 tan(49)=y/z tan(31)=y/(z+4)
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