I need to find the resultant vector c in magnitude and direction.
I found the magnitude to be 7.2 using cosine rule, i.e.:
However, I'm not able to find the magnitude.
So far, I have tried the following:
Since resultant vector c = a + b
ax = -(6 cos 40)
ay = 6
bx = 3 cos 70
by = 3
Then,
cx = ax + bx
cy = ay + by
But that doesn't seem to help.