find vector angle between 2 corrdinates in matlab

To find the angle between two coordinates in MATLAB, you can use the dot product and the norm functions to calculate the cosine of the angle. You can then use the inverse cosine function to find the angle in radians. Here's an example code snippet:

main.m
% coordinates
P = [0 0 0]; % origin
Q = [1 1 1]; % destination

% vectors
vPQ = Q - P; % vector from P to Q
vX = [1 0 0]; % x-axis vector

% angle calculation
cosTheta = dot(vPQ, vX) / (norm(vPQ) * norm(vX)); % cosine of angle
thetaInRadians = acosd(cosTheta); % angle in radians

disp(thetaInRadians) % display the angle in radians
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In this example, we have two three-dimensional coordinates, P and Q. We calculate the vector vPQ from P to Q, and the vector vX along the x-axis. We then use the dot product and norm functions to find the cosine of the angle between vPQ and vX. Finally, we use the inverse cosine function to find the angle in radians and display it.