Tagged Questions
0
votes
1answer
35 views
How to determine if two points lie in a particular section of circle.
I'll take assistance from the figure below.
O is the center of the circle, and A,B,C are the points on the circle, and are known. i.e. the x,y coordinates of these three points are known. I want to ...
0
votes
1answer
35 views
Problem of sketching a circle
I've to solve a problem in which I've been given this equation: $x^2$ + $y^2$ $=$ $4$ and I've to sketch a circle which is the locus of the equation. Here $'2'$ is the radius $r$ of the circle. 2 ...
0
votes
1answer
144 views
Analytical geometry - circles
How do you find the point for a circle and find the radiums when x squared has a co-efficient?
0
votes
3answers
125 views
Find the length of this chord.
I've been trying to solve this geometry question for past 2 hours but haven't got the answer yet.
There are two concentric circles or radius $8 cm $ and $13 cm$ with the common center $O$. $PQ$ is ...
2
votes
4answers
101 views
How do I find the points of a circle?
Say you have a center of $(5, 5)$ and a radius of $2$. If you went for each x-value in $\{3, 4, 5, 6, 7\}$, how would you find the y value?
EDIT: I have this code in C#
...
0
votes
2answers
203 views
Problem with finding the equations of the lines tangent to a certain circle
This is a long question, and might seem like a repost of my earlier questions, but it isn't, hear me out:
In my book is written:
The equation of the line tangent to the circle $x^2+y^2=r^2$ in the ...
0
votes
5answers
149 views
Find the equation of a circle which intersects another circle perpendicularly
'Find the equation of the circle with its center at $M(4,3)$ which intersects the circle $(x-3)^2+y^2=5$ perpendicularly'
How can 2 circles have a perpendicular intersection, is this even possible? ...
0
votes
0answers
102 views
Derive the equation of a circle
for any 3 points in space $(x_1,y_1,z_1)$, $(x_2,y_2,z_2)$, $(x_3,y_3,z_3)$, provided they are not co-linear there is a unique circle that can be drawn through these points.
What is the equation of ...
3
votes
4answers
1k views
How to calculate the two tangent points to a circle with radius R from two lines given by three points
I need to calculate the two tangent points of a circle with the radius $r$ and two lines given by three points $Q(x_0,y_0)$, $P(x_1,y_1)$ and $R(x_2,y_2)$.
Sketch would explain the problem more. I ...
2
votes
1answer
285 views
finding one circles radius so that it tangentially touches two other set circles
I am designing a water fountain on google sketchup and have run into a problem. I am designing the contours of the stone in the fountain. I would attach a picture of the problem but i need 10 ...
1
vote
1answer
949 views
how can I obtain enclosed area between two circles in cartesian coordinates?
In the diagram below (from here fig.2, page.5) the enclosed area between two circles (shaded area) has been indicated $a_{t+\delta_{t}}$. Can anyone help me how can I compute this? is it true? ...
1
vote
3answers
267 views
Finding the equation of a circle
$A=(3,1)$ and $B=(-1,-1)$ are points on a circle of center $(k, -3k)$ find the value of $k$
I begin by assinging the values $\ g = -k $ and $\ f=3k $.
I then substitute $(3, 1)$ and $ g= -k, f= ...
1
vote
1answer
85 views
Circle locus, how to satisfy the equation.
$A(-3,1), B(0,-5), P(X,Y)$
If $|AP| = 2|BP|$ prove that $x$ and $y$ satisfy the equation:
\begin{aligned}
\ x^2+y^2-2x+14y+30 =0
\end{aligned}
I get as far as determining the ...
1
vote
5answers
1k views
finding center of circle
How can I calculate center of a circle $x,y$? I have 2 points on the circumference of the circle and the angle between them.
The 2 points on the circle are $P_1(x_1,y_1)$ and $P_2(x_2,y_2)$. The ...
2
votes
1answer
74 views
Finding the location of the end of an arc, knowing the beginning, the arc's length and the radius
I apologise in advance if this is really basic. I have a circle of radius 15, from which i work out an arc, given an angle of arbitrary value (it's for a computer program). Given that i know the point ...
7
votes
2answers
3k views
Finding the intersecting points on two circles
Given 2 circles on a plane, how do you calculate the intersecting points?
In this example I can do the calculation using the equilateral triangles that are described by the intersection and centres ...
0
votes
3answers
549 views
Formula to Move the object in Circular Path
I want to move one object (dot) in circular path.
By using x and y position of that object.
Thanks.
