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**1. The problem statement, all variables and given/known data**

A car is driven east for a distance of 55 km, then north for 34 km, and then in a direction 30° east of north for 23 km. Draw the vector diagram and determine the total displacement of the car from its starting point.

**2. Relevant equations**

the answer = arc tan (ay/ax)

**3. The attempt at a solution**

The magnitude is 87 km.

But I don't understand how to find the direction (in degrees) counterclockwise from east. You have to use that tangent formula. But I don't know what numbers to plug in for the x and y component.