In the cartesian plane, O is the origin ...

In the cartesian plane, O is the origin of the coordinate axes. A person starts at O and walks a distance of 3 units in the NORTH - EAST direction and reaches the point P. From P he walks 4 units distance parallel to NORTH - WEST direction and reaches the point Q. Express the vector `bar(OQ)` interms of `bar(i) and bar(j)` (Observe `angleXOP=45^(@)`)

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The correct Answer is:

`- bar(i) + 7 bar(j)`

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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-ADDITION OF VECTORS -Exercise - 4 (a)

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