Find a vector in the direction of vector `2 hat i-3 hat j+6 hat k`whic – InterviewSolution

1.	Find a vector in the direction of vector `2 hat i-3 hat j+6 hat k`which has magnitude 21 units.
Answer» Correct Answer - `(6hat(i)-9hat(j)+18hat(k))` Required vector `=(21(2hat(i)-3hat(j)+6hat(k)))/(sqrt(2^(2)+(-3)^(2)+6^(2)))=(21(2hat(i)-3hat(j)+6hat(k)))/(sqrt(49))` `=3(2hat(i)-3hat(j)+6hat(k))=(6hat(i)-9hat(j)+18hat(k))`.

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