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Geometry

In triangle ABC, ∠BAC = 60° and O is a point inside the triangle such that ∠BOC = 120°. Which of the following is certainly true?
(1) O is orthocenter of the triangle ABC.

(2) O is circumcenter of the triangle ABC.

(3) Both (1) and (2) are true.

(4) None of (1) and (2) is certain.

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5 comments

  1. Abhishek Tandon

    Option 3

    When the figure is drawn it is evident that the vertices lie on the sides of circle because angle at the center is double made at the circumference Making BO and OC radius which makes all angles 60degrees of triangle. Hence for equilateral triangle circumcenter, orthocenter is the same point.

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