Module 1 : A Crash Course in Vectors
Lecture 1 : Scalar And Vector Fields
Two vectors are orthogonal if
 
\begin{displaymath}\vec A\cdot\vec B = 0\end{displaymath}
Dot products of the cartesian basis vectors are as follows
 
\begin{eqnarray*} \hat\imath\cdot\hat\imath =\hat\jmath\cdot\hat\jmath = \hat k\... ...at\jmath =\hat\jmath\cdot\hat k = \hat k\cdot\hat\imath &=& 0\\ \end{eqnarray*}
Exercise 1
   
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