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Mathematics
Mathematics
Problem
The point
T
(
2
,
4
)
T(2,4)
T
(
2
,
4
)
lies on the circle
x
2
+
y
2
=
20
x^2 + y^2 = 20
x
2
+
y
2
=
20
. Find the equation of the tangent to the circle at
T
T
T
. a)
x
+
2
y
=
20
x + 2y = 20
x
+
2
y
=
20
b)
2
x
−
y
=
0
2x - y = 0
2
x
−
y
=
0
c)
x
+
2
y
=
10
x + 2y = 10
x
+
2
y
=
10
d)
x
−
2
y
=
10
x - 2y = 10
x
−
2
y
=
10
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