$\vec{b}$

$\vec{a}$

C = (-3, 1)
B = (-2, 4)
A = (3, 3)
b = Vector(C, B)
a = Vector(C, A)
α = Angle(a, b)
c: (a * b)
Text1: "\vec{a} \cdot \vec{b} = \begin{pmatrix}" + (LaTeX[x(a)]) + "\\" + (LaTeX[y(a)]) + "\end{pmatrix} \cdot \begin{pmatrix}" + (LaTeX[x(b)]) + "\\" + (LaTeX[y(b)]) + "\end{pmatrix} = " + (LaTeX[c]) + ""