How to Calculate the Bird's Net Displacement Using Vector Addition?

[ComputerForests000]

Homework Statement

"A bird flew 40 m to the west, then 100 m in a direction 36.9 degrees to the north of east. Use the algebraic addition of vectors to fins the magnitude of the bird's net displacement"
Use sin (36.9) =0.6 and cos (36.9) = 0.8

Homework Equations

Vector addition?
A = √(Ax^2+Ay^2)
...
θ=arctan(Ay/Ax)

The Attempt at a Solution

Don't remember how to do these types of problems...

 

[Delta2]

Is law of cosines within the theory that you have learn?

 

[verty]

Start by drawing a sketch that is somewhat accurate. Then see if you can find a way to solve it.

 

[RPinPA]

Draw the picture. What are the x components of those two displacements? What are the y components of those two displacements?