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The vector a, b, c are equal in length a...

The vector a, b, c are equal in length and taken pairwise they mak equal-angles.
If `a=i+j, b=j+k` and c makes obtuse angle with x-axis, then c =

A

`-i+4j-k`

B

`i+k`

C

`(1)/(3)(-i+4j-k)`

D

`(1)/(3)(i-4j+k)`

Text Solution

Verified by Experts

The correct Answer is:
C
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ML KHANNA-ADDITION AND MULTIPLICATION OF VECTORS -Problem Set (2) (MULTIPLE CHOICE QUESTIONS)
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