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Question

A triangle ABC with vertices A(−1,0), B(−2,34), & C(−3,−76) has its orthocentre H. Then the orthocentre of triangle BCH will be

A
(3,2)
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B
(1,3)
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C
(1,2)
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D
none of these
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Solution

The correct option is A none of these
The ortho-center is the point where all three altitudes of the triangle intersect.

Given, H is the ortho-centre of ABC

It is obvious that the ortho-centre of BHC is A

Consider BHC,
HF, BK, CL are the altitudes

On extending these altitude to meet at a point, which is the ortho-centre, we can see that they meet at A.

Hence, A (1,0) is the ortho-centre of BHC. It is not in the given options.

932712_296358_ans_2a49ea76df214be79f09dbca292d35f1.JPG

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