Teaching DSSSB TGT Mock Test 2025 Mathematics Vector Algebra Types of Vectors

Unit vector of \(\rm \vec r=3i+2j-2k\) will be:

1
\( \frac{3i}{\sqrt{17}} + \frac{2j}{\sqrt{17}} - \frac{2k}{\sqrt{17}}\)
2
\(\sqrt{17}\) unit
3
\(\sqrt{15}\) unit
4
2 unit
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