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Originally Posted by GUILLE can you explain me the diff between the types of multiplications |
There are two: the dot product and the cross product. For two vectors A and B, their absolute value by dot product is cos(angle)|A||B|. The absolute value of their cross product is sin(angle)|A||B|. The vectors themselves dont have to be zero but the angular arguments can have values between [0,1] inclusively. For example, sin(90
º)=1, cos(90º)=0, sin(0º)=0, and cos(0º)=1.