Explanation:
To find the sum of vector, (C=A+B)we can descompose each of the vectors in the x & y coordinates.
vector A
A=3.14;30°
vector B
B=2.71;-60
Now we can sum each of the coordinates:
C = A + B
Those are the components of the vector, to find its magnitude we can use Pythagoras.
And the angle will be: