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Byju's Answer
Standard XII
Mathematics
Position of a Point with Respect to Circle
18. Consider ...
Question
{ 18. Consider the lines }2x-y=-1 and }x-2y=-5. The circle }}{ of radius }2 that lies completely in the first quadrant and }}{ is tangent to both lines has centre at the point }(a,b). The }}{ value of }(ab) is equal to
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Q.
A circle of radius
2
has centre at
(
2
,
0
)
and another circle of radius
1
has centre at
(
5
,
0
)
.
A line is tangent to the two circles at points in first quadrant. The equation of tangent is
Q.
A circle of radius
2
has centre at
(
2
,
0
)
and another circle of radius
1
has centre at
(
5
,
0
)
.
A line is tangent to the two circles at points in first quadrant. The equation of tangent is
Q.
A circle of radius
2
has center at
(
2
,
0
)
. Another circle of radius
1
has center at
(
5
,
0
)
. A line is tangent to the two circles at points in the first quadrant. Which of the following is the y-intercept of the line?
Q.
The line
2
x
−
y
+
1
=
0
is a tangent to the circle at the point (2, 5) and the centre of the circle lies on
x
−
2
y
=
4
. Then radius of the circle is :
Q.
The line
2
x
−
y
+
1
=
0
is tangent to a circle at point
(
2
,
5
)
and the centre of the circle lies on
x
−
2
y
=
4.
Then the radius of the circle is ____ units.
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