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If the vector 8i + aj of magnitude 10 is...

If the vector 8i + aj of magnitude 10 is in the direction of the vector 4i + 3j, then the value of a is equal to a)6 b)3 c)-3 d)-6

A

6

B

3

C

-3

D

-6

Text Solution

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The correct Answer is:
D
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