what is the velocity vector of a sailboat traveling east at 20 mph with a wind of 10. mph to the north

X = 20 mi/h

Y = 10 mi/h

Tan A = Y/X = 10/20 = 0.50
A = 26.56o

V = X/Cos A = 20/Cos26.56 = 22.4mi/h[26.56o]