For what value of x , will two vectors A =2 hat{ i }+2 hat{ j }-x hat{ k } and B =2 hat{ i }-hat{ j

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3-1.Vectors

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For what value of $x$, will the two vectors $A =2 \hat{ i }+2 \hat{ j }-x \hat{ k }$ and $B =2 \hat{ i }-\hat{ j }-3 \hat{ k }$ are perpendicular to each other?

A$x=-2 / 3$

B$x=3 / 2$

C$x=-4 / 3$

D$x=2 / 3$

Solution

(a)
Dot product should be zero.

Standard 11

Physics

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