The position vectors of A, B and C are 2...

The position vectors of A, B and C are `2hati-hatj+hatk,hati-3hatj-5hatk` and `x hati-3hatj+hatk` respectively in `DeltaABC`. If `angleC=(pi)/(2)` then the value of x is ……………..

A

`-2` and `-1`

B

`-2` and 1

C

2 and `-1`

D

2 and 1

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D

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KUMAR PRAKASHAN-VECTOR ALGEBRA -Solutions of NCERT Exemplar Problems (Multiple Choice Questions (MCQs) )

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