Question

The unit vector along icap- 2jcap is :
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Answer 1

Answer:

Unit vector = Vector/Magnitude of vector

here Vector is i - 2j

Therefore its magnitude is √1²+(–2²)

which is equal to √5

so unit vector is

$\frac{i - 2j}{ \sqrt{5} }$

Answer 2

Answer:

UNIT VECTOR ALONG icap-2j cap is I cap -2j cap/root 5