Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
The equations of the tangents drawn from the point
(
0
,
1
)
(0, 1)
(
0
,
1
)
to the circle
x
2
+
y
2
−
2
x
+
4
y
=
0
x^2 + y^2 - 2x + 4y = 0
x
2
+
y
2
−
2
x
+
4
y
=
0
are - (A)
2
x
−
y
+
1
=
0
2x - y + 1 = 0
2
x
−
y
+
1
=
0
,
x
+
2
y
−
2
=
0
x + 2y - 2 = 0
x
+
2
y
−
2
=
0
(C)
2
x
−
y
+
1
=
0
2x - y + 1 = 0
2
x
−
y
+
1
=
0
,
x
+
2
y
+
2
=
0
x + 2y + 2 = 0
x
+
2
y
+
2
=
0
(B)
2
x
−
y
−
1
=
0
2x - y - 1 = 0
2
x
−
y
−
1
=
0
,
x
+
2
y
−
2
=
0
x + 2y - 2 = 0
x
+
2
y
−
2
=
0
(D)
2
x
−
y
−
1
=
0
2x - y - 1 = 0
2
x
−
y
−
1
=
0
,
x
+
2
y
+
2
=
0
x + 2y + 2 = 0
x
+
2
y
+
2
=
0
Browse the problem library