An airplane is flying in the direction of 30 degrees South of West at 600 mph. A wind is blowing in the direction of 60 degrees North of East at 40 mph.| <600cos (210), 600sin (210)>,<40cos (60), 40sin (60)> are the component forms for the air and wind vectors. The ground speed, G, of the plane is given by
A. G=√((600√3/2+20)²+(300+40 √3/2)²
B. G=√((-600√3/2+20)²+(-300+40 √3/2)²
C. G=√((-600√3/2-20)²+(300-40 √3/2)²