Calculator programs · Measures, Shape and Space
Tangents to a circle
1: the two tangents with a given slope. 2: the two tangents from a point outside the circle. Both as y = mx + c.
Measures, Shape and Space
When it helps
P1 of the Geometry calculator in the two-calculator pack. Tangent lines take a quadratic in m or c by hand; they appear in 4 of the last 14 years from a point and 3 with a slope.
At each prompt
- Menu item 1: Tangents with a given slope: D, the coefficient of x, E, the coefficient of y, F, the constant term, m, the slope
- Menu item 2: Tangents from a point: D, the coefficient of x, E, the coefficient of y, F, the constant term, p, the point's x, q, the point's y
- Size
- 165 bytes
- Keying in
- about 7–11 min to key in (267 presses)
- Run mode
- COMP