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If A,B,C and D are points whose position...

If A,B,C and D are points whose position vectors are `hat(i) + hat(j) + hat(k), 4hat(i) - hat(j) + 2hat(k), 5hat(i) + hat(j)`,
`7 hat(i) + 2hat(j) + 3hat(k)` respectively, then the projection of AB on CD is

A

`(4)/(3)`

B

`sqrt((2)/(7))`

C

`(3)/(4)`

D

`sqrt((7)/(2))`

Text Solution

Verified by Experts

The correct Answer is:
D
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