Question

If vector A=2i+j+2k then vector A is
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Answer 1

Explanation:

Magnitude of A is |A| = sq. root of 2^2 +1^2 +2^2

= sq. root of 4+1+4

= sq. root of 9

= 3 Ans.

Or Unit vector = A/|A| = 2i+j+2k/3

= (2/3)i+(1/3)j+(2/3)k