If a vertex of an equilateral triangle i...

If a vertex of an equilateral triangle is the origin and the side opposite to it has the equation `x+y=1`, then the orthocentre of te triangle is

A

`(1/3,1/3)`

B

`(2/3,2/3)`

C

(1,1)

D

(1,3)

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The correct Answer is:

A

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