Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Problem
Problem
If two sides of a triangle are roots of the equation
x
2
−
7
x
+
8
=
0
x^2 - 7x + 8 = 0
x
2
−
7
x
+
8
=
0
and the angle between these sides is
60
∘
60^\circ
6
0
∘
, then the product of in-radius and circum-radius of the triangle is a.
8
7
\frac{8}{7}
7
8
b.
5
3
\frac{5}{3}
3
5
c.
5
2
3
\frac{5\sqrt{2}}{3}
3
5
2
d. 8
Browse the problem library