Write a unit vector in the direction of b^{\to} = ...

CBSE Class 12 Math 2009 Solved Paper

Question : 7 of 29

Marks: +1, -0

Write a unit vector in the direction of

b↖{→}

2i↖{\^}+j↖{\^}+2k↖{\^}

Solution:

b↖{→}

2i↖{\^}+j↖{\^}+2k↖{\^}

Unit vector in the direction of b is given by

b↖{→}/{|b↖{→}|}

b↖{→}/{|b↖{→}|}

{2i↖{\^}+j↖{\^}+2k↖{\^}}/√9

1/3(2i↖{\^}+j↖{\^}+2k↖{\^})

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