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Length of Tangent from an External Point
For a point $$(x_1,y_1)$$ and parabola:
$$y^2=4ax$$
the tangent length is:
$$\sqrt{y_1^2-4ax_1}$$
Usage
- Used to calculate the length of either tangent drawn from an external point.
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Length of Tangent from an External Point
For a point $$(x_1,y_1)$$ and parabola:
$$y^2=4ax$$
the tangent length is:
$$\sqrt{y_1^2-4ax_1}$$
Usage
- Used to calculate the length of either tangent drawn from an external point.
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