1.

கொடுக்கப்பட்ட வெக்டார் r=3i+2jஇவ்வெக்டரை ஓரலகு வெக்டராக மாற்றுக

Answer»

I am writing answer in ENGLISH so all users can easily understand :
We have the Vector : r:3i+ 2j

MAGNITUDE of this vector :
|r| = \sqrt{ {2}^{2} + {3}^{2} } = \sqrt{13}

Unit vector is given by :
<klux>U</klux> = \frac{r}{ |r| } = \frac{3i + 2j}{ \sqrt{13} } = \frac{3}{ \sqrt{13} } i + \frac{2}{ \sqrt{13} } j
THEREFORE, u is REQUIRED unit vector.


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