Question

Sketch the vectors u and w with angle θ between them and sketch the resultant.|u|=20, |w|=50, θ=80°

Answer 1

Vectors are represented by arrows, where the norm of a vector determinate its length.

Since θ = 80° is the angle between them, a sketch for our vectors is

The resultant of their sum is given by the parallelogram law. If we draw two vectors parallel to u and w, we're going to have a sketch of a parallelogram, and the diagonal connecting the angle between u and w to the opposite vertice represents the resultant.