Q3 of 44 Page 1057

If and , find .

Verify that (i) and are perpendicular to each other


and (ii) and are perpendicular to each other.



Here,


We


have


⇒


Thus, substituting the values of ,


in equation (i) we get


⇒


⇒


If and are perpendicular to each other then,


⇒


i.e.,



And in the similar way, we have,



Hence proved.


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1 E

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2

Find λ if .

 4

Find the value of:

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5 A

Find the unit vectors perpendicular to both and when

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