Find distance between intersections of circle and line?
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02-08-2019, 12:45 PM
(This post was last modified: 02-08-2019 01:44 PM by Albert Chan.)
Post: #9
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RE: Find distance between intersections of circle and line?
Distance from point (x0, y0) to line Ax + By + C = 0 is abs(Ax0 + By0 + C)/√(A² + B²)
-> Distance from circle center (-1,0) to y=2x+3 is abs(-2 + 0 + 3)/√5 = 1/√5 -> Distance between intersecting points = 2 * √(55 - 1/5) = 2 √(274/5) ~ 14.8 |
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