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The value of a, for which the points A, ...

The value of a, for which the points A, B, C with position vectors `2hat(i)-hat(j)+hat(k),hat(i)-3hat(j)-5hat(k),ahat(i)-3hat(j)+hat(k)` respectively are the vertices of a right angled triangle with `C=(pi)/(2)are`

A

1

B

2

C

-1

D

-2

Text Solution

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The correct Answer is:
A, B
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