Use the Parallelogram Rule to Find the Magnitude of the Resultant

Multiple Choice

Use the parallelogram rule to find the magnitude of the resultant force for the two forces shown in the figure. Round to
one decimal place.
-A pilot wants to fly on a bearing of $60.9 ^ { \circ }$ . By flying due east, he finds that a $57 - \mathrm { mph }$ wind, blowing from the south, puts him on course. Find the ground speed of the plane.

A) $117 \mathrm { mph }$
B) $176 \mathrm { mph }$
C) $65 \mathrm { mph }$
D) $234 \mathrm { mph }$