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Mathematics
Mathematics
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
, are a.
x
=
0
x = 0
x
=
0
b.
y
=
0
y = 0
y
=
0
c.
(
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
d.
(
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
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