How to Find the Resultant Velocity of a Plane with a Wind?

[shizupple]

Homework Statement

Kyle is flying a plane due north at 230 km/h as a wind carries it due east at 56 km/h. Find the magnitude and direction of the plane's resultant velocity analytically.
236.7 km/h (magnitude)
° (direction)

Homework Equations

Tan=opp/adj

The Attempt at a Solution

This should be straightfoward but i guess not?
I tried:
tan^-1 (56/230)=13.7 degrees

Cant seem to figure out why this isn't working it should be straightfoward

 

[Mark44]

I don't see anything wrong. Why do you think it isn't working?

 

[shizupple]

My webassign is marking it wrong... i don't see how it is wrong though??!

 

[shizupple]

Nevermind I got it they wanted the angle from the other side (76.3). Thanks!