**Topics discussed in this video:**

Magnitude of Vectors, Formula to find vector using coordinates of initial and terminal points, Direction ratios, unit vectors, multiplication of vectors by scalar using Geogebra

**1.** Compute the magnitude of the following vectors:

\vec{a}=\hat{i}+\hat{j}+\hat{k}

\vec{b}=2\hat{i}-7\hat{j}-3\hat{k}

\vec{c}=\frac{1}{\sqrt{3}}\hat{i}+\frac{1}{\sqrt{3}}\hat{j}-\frac{1}{\sqrt{3}}\hat{k}

**10.** Find a vector in the direction of vector 5\hat{i}-\hat{j}+2\hat{k} which has magnitude 8 units.