NDA Math Vector Algebra

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Question : 56 of 101

Marks: +1, -0

If

→

a

=

⋀

i

−

⋀

j

+

⋀

k

,

→

b

=2

⋀

i

+3

⋀

j

+2

⋀

k

and

→

c

=

⋀

i

+m

⋀

j

+n

⋀

k

are three coplanar vectors and |

→

c

|=√6,then which one of the following is correct?

[NDA I 2017]

m=2 and n=±1
m=±2 and n=−1
m=2 and n=−1
m=±2 and n=1

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