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- The question is: what is the relation between the topology of the $xy$-plane and the topologies of the $x$- and $y$-axes? where $\phi$ is the angle of the rod and $R$ is the (fixed) length of the rod.44 KB (7,951 words) - 02:21, 30 November 2015
- ...'' Given vectors $a=<1,2>,\ b=<-2,1>$, find their magnitudes and the angle between them.2 KB (389 words) - 19:13, 6 May 2016
- (Note that $f'(a), g'(a)$ are vectors, $f(a), g(a)$ are scalars) ...rphi {\rm \hspace{3pt} is \hspace{3pt} the \hspace{3pt} angle \hspace{3pt} between \hspace{3pt}} e {\rm \hspace{3pt} and \hspace{3pt}} f'(a), \\6 KB (962 words) - 15:45, 17 August 2011