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Three points A,B, and C have position ve...

Three points A,B, and C have position vectors `-2veca+3vecb+5vecc, veca+2vecb+3vecc` and `7veca-vecc` with reference to an origin O. Answer the following questions?
Which of the following is true?

A

2OA-3OB+OC=0

B

2OA+7OB+9OC=0

C

OA+OB+OC=0

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
`2OA-3OB+OC`
`=2(-2a+3b+5c)-3(a+3b+3c)+(7a-c)=0`
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