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The equation of the tangents drawn from the origin to the circle is
MATHEMATICS · Single correct · CBSE · Mathematics · Circles · Circles
Problem
The equation of the tangents drawn from the origin to the circle
x
2
+
y
2
−
2
r
x
−
2
h
y
+
h
2
=
0
x^2+y^2-2rx-2hy+h^2=0
x
2
+
y
2
−
2
r
x
−
2
h
y
+
h
2
=
0
is (1)
x
=
0
x=0
x
=
0
(2)
y
=
0
y=0
y
=
0
(3)
(
h
2
−
r
2
)
x
−
2
r
h
y
=
0
(h^2-r^2)x-2rhy=0
(
h
2
−
r
2
)
x
−
2
r
h
y
=
0
(4)
(
h
2
−
r
2
)
x
+
2
r
h
y
=
0
(h^2-r^2)x+2rhy=0
(
h
2
−
r
2
)
x
+
2
r
h
y
=
0
Related theory
Circle (Standard Equation)
Conic Sections
Circles
Tangent to a Circle
Equation of a circle
Coordinate Geometry
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