Plz help me with this tough math problem?

Question

Add the following three vectors together. Show the vector addition graphically. Calculate the magnitude and direction of the resultant vector.

A = 450m at 20 degrees, B = 25m at 270 degrees, C = 230m at 70 degrees

Answer 1

A = (422.8620, 153.909)
B = (0, -25)
C = (78.665, 216.129)
A + B + C = (501.526, 345.038)
Magnitude = 608.753
Angle = 0.60261 rad = 34.527 deg