Question

what is the unit vector of A=3i-4j

Answer 1

Answer:

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Explanation:

The unit vector in the direction of

a

=

r

<

cos

θ

,

sin

θ

>

is

(

cos

θ

,

sin

θ

)

.

So, the unit vector is

1

r

a

.

Here, it is

<

3

,

4

>

|

<

3

,

4

>

|

=

1

√

3

2

+

4

2

a

=

1

5

a