The value of , for which the points with position vectors respectively are the vertices of a right angled triangle at are
2 and 1
–2 and –1
–2 and 1
2 and –1
As we have learned
Scalar Product of two vectors -
- wherein
is the angle between the vectors
Position Vector -
If and are the position of vectors of two points A and B then
- wherein
( a-2 )( a-1 )= 0
a = 1,2
Option 1)
2 and 1
Option 2)
–2 and –1
Option 3)
–2 and 1
Option 4)
2 and –1
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