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Find the unit vector in the direction of the vector \(-12i +...

Find the unit vector in the direction of the vector 12i+5j

A.

12i135j13

B.

1i13+5j13

C.

12i13+5j13

D.

5i13+12j13

Correct answer is C

ˆn=n|n|

ˆn=12i+5j(12)2+(5)2

= 12i13+5j13