Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
mobile
exams
ask
sample papers
tutors
pricing
sign-in
Download our FREE mobile app with 1000+ tests for CBSE, JEE MAIN, NEET
X
Search
Topics
Want to ask us a question?
Click here
Browse Questions
Student Questions
Ad
Home
>>
CBSE XI
>>
Math
>>
Conic Sections
0
votes
Find the equation of the circle which touches $x$-axis and whose centre is $(1, 2)$
cbse
class11
math
conic-sections
circle
exemplar
sec-a
easy
Share
asked
Apr 9, 2014
by
balaji.thirumalai
Please
log in
or
register
to add a comment.
Can you answer this question?
Do not ask me again to answer questions
Please
log in
or
register
to answer this question.
1 Answer
0
votes
Toolbox:
The equation of a circle with center $(h,k)$ and radius $r$ is $(x - h)^2 + (y - k)^2 = r^2$
Given that the circle touches the $x$-axis $\rightarrow$ radius of the circle $=k$.
Given that $(h,k) = (1,2) \rightarrow$ the equation of the circle is $(x-1)^2 + (y-2)^2 = 2^2 = 4$
answered
Apr 9, 2014
by
balaji.thirumalai
Please
log in
or
register
to add a comment.
Related questions
0
votes
1
answer
Find the equation of the circle which touches the both axes in first quadrant and whose radius is $a$?
asked
Apr 9, 2014
by
balaji.thirumalai
cbse
class11
math
conic-sections
circle
exemplar
sec-a
easy
0
votes
1
answer
The equation of a circle with origin as centre and passing through the vertices of an equilateral triangle whose median is of length $3a$ is
asked
Oct 16, 2014
by
sreemathi.v
cbse
class11
math
conic-sections
circle
exemplar
sec-a
easy
q50
0
votes
1
answer
Find the equation of the circle passing through the point $(2,3)$ with radius $5$ whose centre lies on the x-axis.
asked
Apr 1, 2014
by
balaji.thirumalai
cl35239
cl35230
cbse
class11
ch11
exercise11-1
circle
conic-sections
easy
sec-a
q12
math
0
votes
1
answer
Equation of a circle which passes through $(3,6)$ and touches the axes is
asked
Oct 16, 2014
by
sreemathi.v
cbse
class11
math
conic-sections
circle
exemplar
sec-a
medium
q48
0
votes
1
answer
Equation of the circle with centre on the $y$-axis and passing through the origin and the point $(2,3)$ is
asked
Oct 16, 2014
by
sreemathi.v
cbse
class11
math
conic-sections
circle
exemplar
sec-a
medium
q49
0
votes
1
answer
Find the equation of a circle whose centre $(3,-1)$ and which cuts off a chord of length $6$ units on the line $2x-5y+18=0$.
asked
Oct 13, 2014
by
sreemathi.v
cbse
class11
math
conic-sections
circle
exemplar
sec-b
medium
q25
0
votes
1
answer
Find the equation of a circle passing through the point $(7,3)$ having radius $3$ units and whose centre lies on the line $y=x-1$.
asked
Oct 14, 2014
by
sreemathi.v
cbse
class11
math
conic-sections
circle
exemplar
sec-c
medium
q27
Ask Question
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
5 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
x
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App
...