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If the position vectors of the vetrices ...

If the position vectors of the vetrices of a triangle be `6hati+4hatj+5hatk`,`4hati+5hatj+6hatk`and `5hati+6hatj+4hatk`,then he triangle is

A

a)Right angled

B

b)Isosceles

C

c)Equilateral

D

d)none of these

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