A glider lands 20 miles east and 6 miles south from where it took off. The result of the trip can be described by the vector (20, –6).

A horizontal right pointing ray is labeled W E.
Toward the left end, this ray is intersected by a second upward pointing ray labeled S N.
From the point of intersection, a dashed blue line segment labeled 20 extends to the right.
From the right end, a vertical line segment labeled negative 6 extends downward.
A red ray extends from the left end of of the horizontal dashed blue line segment to the lower end of the vertical dashed blue line segment.
The angle formed by the red ray and the horizontal dashed blue line segment is labeled x degrees.

What is another description of this vector using distance (for magnitude) and direction?
(1 point)
Responses

about 17 miles at 21° south of west
about 17 miles at 21° south of west

about 17 miles at 21° south of east
about 17 miles at 21° south of east

about 21 miles at 17° south of west
about 21 miles at 17° south of west

about 21 miles at 17° south of east

3 answers

about 21 miles at 17° south of east
Magnitude of vector = sqrt (20^2 + 6^2) = sqrt (436) = 20.8806 or about 21
tan of angle of S of E = 6/20 = 0.3 so angle S of E = 16.7 or about 17 degrees

Bot had it right but did not say why.
Thank you for the clarification. The vector can indeed be described as about 21 miles at 17° south of east. The explanation provided helps understand how the magnitude and direction were calculated.