AIEEE 2006 Solved Paper

Section: Mathematics

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Question : 140 of 143

Marks: +1, -0

The values of a, for which points A,B,C with position vectors 2

∧

i

−

∧

j

+

∧

k

,

∧

i

−3

∧

j

−5

∧

k

and a

∧

i

−3

∧

j

+

∧

k

respectively are the vertices of a right angled triangle with C=‌

π

2

are

[AIEEE 2006]

2 and 1
−2 and −1
−2 and 1
2 and −1

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