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Equation of Tangent of Hyperbola in Point Form, Equation of Tangent of Hyperbola in Parametric Form and Slope Form is considered one of the most asked concept.
63 Questions around this concept.
The tangent at a point P on the hyperbola meets one of the directrices in F. If PF subtends
an angle at the corresponding focus, then equals
Tangents are drawn to from a point P. If these tangents intersect the coordinate axes at concyclic points, The locus of P is
Equation of Tangent of Hyperbola in Point Form:
Note:
T = 0 can be used to get the equation of tangent on the point (x1, y1) lying on any general hyperbola as well.
Equation of Tangent of Hyperbola in Parametric Form and Slope Form
Parametric Form
(This can easily be derived by putting x1 = a sec and y1 = b tan in the point form of tangent)
Slope Form
We have studied that if the line y = mx + c is tangent to the hyperbola , then c2 = a2m2 - b2. So the equation of tangent is .
These equations are equations of two parallel tangents to hyperbola having slope m.
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