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In a triangle ABC and R is the radius of the circle into which the triangle is inscribed(in other words it is the circum radius of the triangle)

then prove it is an equilateral triangle

6 years ago


Answers : (1)


Dear ankit,

we know that . Multiply out the left side to get . Thus the equation becomes , which you can write as . That obviously only holds if .


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Sagar Singh

B.Tech IIT Delhi

6 years ago

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