geometry - Finding the radius of a circle inside of a triangle ...
Dec 19, 2015 · 6 What is the measure of the radius of the circle inscribed in a triangle whose sides measure $8$, $15$ and $17$ units? I can easily understand that it is a right angle …
What is the equation of a general circle in 3-D space?
May 20, 2020 · Intuitively, "an equation" cuts down the dimension by one, but to get a circle in space you have to lower the dimension by two. (A small piece of a circle looks like a line, so a …
geometry - How to find radius of a circle inscribed in a …
Jul 23, 2019 · How to find radius of a circle inscribed in a quadrilateral, given its sides? Ask Question Asked 6 years, 3 months ago Modified 6 years, 3 months ago
Calculate the radius of a circle given the chord length and height …
Oct 8, 2016 · The telescope maker's approximate formula for the radius of curvature of a mirror surface is s = r^2/2R, where r is half the mirror diameter, s is the radius of curvature of the …
geometry - Find the coordinates of a point on a circle
46 I have a circle like so Given a rotation θ and a radius r, how do I find the coordinate (x,y)? Keep in mind, this rotation could be anywhere between 0 and 360 degrees. For example, I …
How do I find the equation of an osculating circle when I'm given …
Apr 15, 2016 · To get to the center of the osculating circle, travel a distance $\rho$ along this normal vector from the point $ (1,1)$. Now you know the center and radius of the osculating …
How do I get the slope on a circle? - Mathematics Stack Exchange
The prior answers have all used calculus. I'm going to post an answer using only trig. The following diagram from Wikipedia's Trig Page is helpful. However, that diagram also has a fault …
3 point to circle. And get radius - Mathematics Stack Exchange
Jun 30, 2018 · This is the same procedure used in this answer to find the center and radius of a circle from three points, but analytically instead of numerically.
geometry - How to calculate the radius of a circle inscribed in a ...
May 1, 2016 · If I know how long one side of a regular hexagon is, what's the formula to calculate the radius of a circle inscribed inside it? Illustration:
Calculating a circles radius from two known points on its …
Apr 13, 2017 · Thanks for providing a formula that is usable on-the-fly! But somehow, the results I get with this are far off. This circle has a radius of $5$, but letting WolframAlpha calculate the …