The point A and B have coordinates (2,3,-1) and (5,-2,2) respectively. Calculate the acute angle between AB and the line with equation
r=(2,3,-1)+t(1,-2,2), giving your answer correct to the nearest degree.
All i need to know is which two to multiply
e.g: (x,y,z) x (x1,y1,z1)
(MY PROBLEM IS HOW TO FIND OR WHICH TWO POINTS TO MULTIPLY)
the i know how to continue
Thanks in advance.