1.

O' is the origin in the cartesian plane. From the origin 'O' take point A is the North East direction such that |bar(OA)|=5. B is a pointin the North West direction such that |bar(OB)|=5. Then |bar(OA)-bar(OB)|=

Answer»

25
`5sqrt(2)`
`10sqrt(5)`
`SQRT(5)`

ANSWER :B


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