need help finding the angle between two vectors using maxima
Subject: need help finding the angle between two vectors using maxima
From: Alejandro Morales
Date: Tue, 28 Sep 2010 21:38:35 -0500 (CDT)
Dear Jack:
Compare your commands with these:
To define vector r(t) as function of t
r(t):=[2*cos(t),3*sin(t)];
To evaluate vector v
v:r(3*%pi/4);
To evaluate vector a
a:r(3*%pi/4);
To find the angle between vector a and v
acos(v.a/(sqrt(a.a)*sqrt(v.v)));
You will obtain the answer 0 because, for this case, vectors v and a are
the same.
I hope this help: A. Morales.