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| rev | Bot | (Created page with "<div class="d-none"><math> \newcommand{\mathds}{\mathbb}</math></div>Develop a theory of angles between the vectors <math>x,y\in\mathbb R^N</math>, by using the well-known formula <math display="block"> < x,y > =||x||\cdot||y||\cdot\cos t </math> that you should by the way fully understand first, in <math>N=2</math> dimensions.") | Apr 20'25 at 1:29 | +330 |