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
ankit sharma , 15 Years ago
Grade 12
Algebra> triangle...
1 AnswersSAGAR SINGH - IIT DELHI
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 
.
We are all IITians and here to help you in your IIT JEE preparation.
All the best.
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Sagar Singh
B.Tech IIT Delhi
sagarsingh24.iitd@gmail.com
Approved Last Activity: 15 Years ago
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