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In the given figure, if vec(PQ) = vecA, ...

 In the given figure, if `vec(PQ) = vecA, vec(QR)=vecB and vec(RS) = vecC` then `vec(PS)` equals 

A

`vecA -vecB +vecC`

B

`vecA +vecB -vecC`

C

`vecA +vecB +vecC`

D

`vecA -vecB -vecC`

Text Solution

Verified by Experts

The correct Answer is:
C
Join PR
From the triangle law of addition
`vec("PR") = vec(PQ) + vec(QR) = vecA + vecB`
Again from the triangle law of addition
`vec("PS")=vec("PR") + vec("RS")= vecA+vecB + vecC`
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