If ⃗a=^i+2^j+2^k and ⃗b=3^i+6^j+2^k, then the vector in the direct

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If

⃗ a =^i + 2^j + 2^k

and

⃗ b = 3^i + 6^j + 2^k

, then the vector in the direction of

⃗ a

and having magnitude as

| ⃗ b |

, is

Options:

A . 7(^i+2^j+2^k)

B . 79(^i+2^j+2^k)

C . 73(^i+2^j+2^k)

D . None of these

Answer: Option C
:
C
The required vectors

= | ⃗ b |^a = \frac{| ⃗ b |}{| ⃗ a |} ⃗ a = \frac{7}{3} (^i + 2^j + 2^k)

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