Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Find the condition that chord of contact of any external point
(
h
,
k
)
(h,k)
(
h
,
k
)
to the circle
x
2
+
y
2
=
a
2
x^2 + y^2 = a^2
x
2
+
y
2
=
a
2
should subtend right angle at the centre of the circle.
Browse the problem library