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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^(@)`)

Text Solution

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The correct Answer is:
`(1)/(sqrt(2))(-bar(i)+7bar(j))`
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