and C2 touch and find an equation for their common tangent. 6. A circle S, which touches the y-axis, has its centre at the point (1, 2). Find the equation of S. Show that S touches the line 3y- 4x + 3 = 0 and find the coordinates of the point of contact. Find also the equation and the length of the second tangent from the origin to the circles. 7. Given that circles C1: x+y-6x- 4y +9= 0 and C2: x + y-2x - 6y+9 = 0. Find an equation of the circle C3 which passes through the centre of C1 and dhrough the points of intersection of C, and C2. Find also a) An equation of the common chord of C1, C2 and C3 b) Equations for two tangents from the origin to the circle C, which are perpendicular to the common tangent. 8. The equation of two circles C, and C2 are x + y = 4 and C2: x+y-2x 0 respectively a) Show that the circles Ci and C2 touch each other internally and find an equation of the common tangent at the point of contact.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
Question

Solve all Q7 explaining detailly each step

CIRCLES
1. Find the coordinates of the center and the length of the radius of the circle:
S: x+y +2x– 4y – 8 = 0. Obtain an equation of the circle S, with center A(3, -4) and radius of
length v13 show that S and S2 touch each other externally and find the coordinates of the point T,
of the contact. Find an equation of the common tangent to the circles at T. Find also equations of
the tangents form the origin to the circle S2.
2. Pand Q are points (1, 2) and (7, 8) respectively. Find an equation of the circ le on PQ as diameter.
Find also an equation of the tangent to this circle at the point P.
V
3. S and S2 are two concentric circles with centre A. Then the radius of S is three times the radius of
S2. Given that the equation of S1 is x
² + y² + 2x – 4y – 31 = 0. Find
%3D
|
An equation of the circle S2
b. An equation of the circle on OA as diameter, where O is the origin.
4. A circle with centre at (2, 3) touches the line 3x – 4y = 5. Find an equation of the circle.
5. Given the two circles C, and C2; C1= x²+y²- 4x-6y+12=0; C2: x+y²– 4x – 8y + l6 = 0 show that C1
and C2 touch and find an equation for their common tangent.
6. A circle S1 which touches the y-axis, has its centre at the point (1, 2). Find the equation of S. Show
that S touches the line 3y – 4x + 3 = 0 and find the coordinates of the point of contact. Find also the
a.
equation and the length of the second tangent from the origin to the circles.
7. Given that circles C1: x+ y- 6x - 4y + 9 = 0 and C2: x + y– 2x – 6y+9 = 0. Find an equation of
the circle C3 which passes through the centre of C and through the points of intersection of C, and
C2. Find also
a) An equation of the common chord of C1, C2 and C3
b) Equations for two tangents from the origin to the circle C1 which are perpendicular to the
common tangent.
%3D
%3D
2
8. The equation of two circles C, and C2 are x+ y = 4 and C2: x+y- 2x 0 respectively
a) Show that the circies C and C2 touch each other internally and find an equation of the common
tangent at the point of contact.
b) Find the equation of the tangents to the circle Ci which are perpendicular to the common tangent
c) Find the area between the two circles
9. The line y = x is a tangent to the circle S at the point (4, 4) on S. The line y = 3x passes through the
centre of the circle. Find an equation of the circle S.
10. Find an equation of the circle which has a segment of the line y = x+ 2 as a diameter and passes
through the point (1, 1) and (2, 3). Find the equations of the two tangents from the origin to the
circle.
Transcribed Image Text:CIRCLES 1. Find the coordinates of the center and the length of the radius of the circle: S: x+y +2x– 4y – 8 = 0. Obtain an equation of the circle S, with center A(3, -4) and radius of length v13 show that S and S2 touch each other externally and find the coordinates of the point T, of the contact. Find an equation of the common tangent to the circles at T. Find also equations of the tangents form the origin to the circle S2. 2. Pand Q are points (1, 2) and (7, 8) respectively. Find an equation of the circ le on PQ as diameter. Find also an equation of the tangent to this circle at the point P. V 3. S and S2 are two concentric circles with centre A. Then the radius of S is three times the radius of S2. Given that the equation of S1 is x ² + y² + 2x – 4y – 31 = 0. Find %3D | An equation of the circle S2 b. An equation of the circle on OA as diameter, where O is the origin. 4. A circle with centre at (2, 3) touches the line 3x – 4y = 5. Find an equation of the circle. 5. Given the two circles C, and C2; C1= x²+y²- 4x-6y+12=0; C2: x+y²– 4x – 8y + l6 = 0 show that C1 and C2 touch and find an equation for their common tangent. 6. A circle S1 which touches the y-axis, has its centre at the point (1, 2). Find the equation of S. Show that S touches the line 3y – 4x + 3 = 0 and find the coordinates of the point of contact. Find also the a. equation and the length of the second tangent from the origin to the circles. 7. Given that circles C1: x+ y- 6x - 4y + 9 = 0 and C2: x + y– 2x – 6y+9 = 0. Find an equation of the circle C3 which passes through the centre of C and through the points of intersection of C, and C2. Find also a) An equation of the common chord of C1, C2 and C3 b) Equations for two tangents from the origin to the circle C1 which are perpendicular to the common tangent. %3D %3D 2 8. The equation of two circles C, and C2 are x+ y = 4 and C2: x+y- 2x 0 respectively a) Show that the circies C and C2 touch each other internally and find an equation of the common tangent at the point of contact. b) Find the equation of the tangents to the circle Ci which are perpendicular to the common tangent c) Find the area between the two circles 9. The line y = x is a tangent to the circle S at the point (4, 4) on S. The line y = 3x passes through the centre of the circle. Find an equation of the circle S. 10. Find an equation of the circle which has a segment of the line y = x+ 2 as a diameter and passes through the point (1, 1) and (2, 3). Find the equations of the two tangents from the origin to the circle.
Expert Solution
steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Knowledge Booster
Linear Equations
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, advanced-math and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,