- #1

Math9999

## Homework Statement

A boat heads north across a river at a rate of 4 miles per hour. If the current is flowing east at a rate of 3 miles per hour, find the resultant velocity of the boat.

## Homework Equations

None.

## The Attempt at a Solution

I know that the resultant velocity is the hypotenuse, which means that 4^2+3^2=v^2, where v=5 mi/h. And that's only part of the answer. The whole answer in the textbook says 5 mi/h at an angle of ≈53.13° to the bank. But how do I find the angle to the bank?