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Question
If `bara, barb, bar c` are the position vectors of the points A, B, C respectively and ` 2bara + 3barb - 5barc = 0` , then find the ratio in which the point C divides line segment AB.
Solution
`2bara + 3barb - 5barc = 0`
`5 barc=3barb+2bara`
`barc=(3barb+2bara)/5`
`barc=(3barb+2bara)/(3+2)`
∴C divides seg AB internally in the ratio 3 : 2
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