JEE Main 2019 Mathematics question
Not in JEE syllabus
In a triangle, the sum of lengths of two sides is x and the product of the lengths of the same two sides is y. If , where c is the length of the third side of the triangle, then the circumradius of the triangle is:
Answer: (C)
Solution
⇒ C = 120° ⇒ R = c/(2 sin C) = c/√3.