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Question

In Q.No. 1, write the distance between the circumcentre and orthocentre of ∆OAB.

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Solution

The coordinates of circumcentre of a triangle are the point of intersection of perpendicular bisectors of any two sides of the triangle.

Thus, the coordinates of the circumcentre of triangle OAB is a2, b2 ,as shown in the figure.
We know that the orthocentre of a triangle is the intersection of any two altitudes of the triangle.
So, the orthocentre of triangle OAB is the origin O(0, 0).

Distance between the circumcentre and orthocentre of ∆OAB = OC

OC=a2-02+b2-02=a2+b22

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