Find the magnitude and direction of this vector using Sine and Cosine Law: 7 m/s on a bearing of 30° and 2 m/s from a bearing of 343.

Answer 1

I assume you want to add the vectors and find the resultant?
I don't mind helping with answers, but I hate to provide the questions as well...
Did you draw a diagram? The angle between the vectors is 47°, so if your vectors are u and v, then if w = u+v,
|w|^2 = 7^2+3^2-2*3*7*cos(47°) = 29.36
so, |w| = 5.42
To find the angle θ between u and w,
sinθ/3 = sin47/5.42
θ = 24°
So w = 5.42@54°

Answer 2

no