Question

8-1 Find the unit vectore of À if Ť = gr - 3 Î . sk } =​

Answer 1

Answer:

Correct option is

C

0.11

The unit vector is given as

A

^

=0.5

i

^

+0.8

j

^

+c

k

^

Magnitude of unit vector is always equal to 1 i.e. ∣

A

^

∣=1

∴

(0.5)

2

+(0.8)

2

+c

2

=1

Or c

2

=0.11

⟹ c=

0.11

Explanation:

Correct option is

C

0.11

The unit vector is given as

A

^

=0.5

i

^

+0.8

j

^

+c

k

^

Magnitude of unit vector is always equal to 1 i.e. ∣

A

^

∣=1

∴

(0.5)

2

+(0.8)

2

+c

2

=1

Or c

2

=0.11

⟹ c=

0.11