A sailboarder is zipping northeast across a river with a velocity of 10.2 m/sec relative to the water. The water is moving north at a velocity of 2.7 m/sec. If the angle between the relative velocity of the sailboard and the river current is 20.8 degrees, what is the resultant or true velocity of the sailboarder (relative to the surrounding land, if you like)?

A sailboarder is zipping northeast across a river with a velocity of 10.2 m/sec relative to the water. The water is moving north at a velocity of 2.7 m/sec. If the angle between the relative velocity of the sailboard and the river current is 20.8 degrees, what is the resultant or true velocity of the sailboarder (relative to the surrounding land, if you like)?