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Find the coordinates of the orthocentre ...

Find the coordinates of the orthocentre of a triangle whose vertices are `(-1, 3) (2,-1)` and `(0, 0).` [Orthocentre is the point of concurrency of three altitudes].

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The correct Answer is:
`(-4,-3)`
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MODERN PUBLICATION-STRAIGHT LINES -Exercise 10(g)
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