An airplane flies due north at 160 km/h with respect to the air. There is a wind blowing at 80 km/h to the east relative to the ground. What is the plane's speed relative to the ground?

Answer 1

X=160sin0+80sin45=56.57km/h
Y=160cos0+80cos45=216.57km/h
Vr=sqrt(X^2+Y^2)=223.84km/hr

Tan A = X/Y, A = Degrees CW = Direction