Tangent and Normal to a Parabola

IMPORTANT

Tangent and Normal to a Parabola: Overview

This topic covers concepts such as Shortest Distance between Parabola and a Line, Tangent to a Parabola, Tangent to Standard Parabola in Slope Form, Tangent to Standard Parabola at a Given Point, Point of Contact of a Given Tangent, etc.

Important Questions on Tangent and Normal to a Parabola

MEDIUM
IMPORTANT

The slope of the normal to the parabola y=x24-2 passing through the point 10, -1 is

EASY
IMPORTANT

From a point C, 0 three normal are drawn to the parabola y2=x . Then

MEDIUM
IMPORTANT

If two tangents are drawn from the point -1,-6 two tangents are drawn to the parabola y2=4x. Then, the angle between two tangents is

MEDIUM
IMPORTANT

Consider a parabola y2=4ax, If the normals at points Pt1 and Qt2 on the parabola intersect at R on the curve then

MEDIUM
IMPORTANT

If two tangents drawn from a point P to the parabola y2=4x are at right angles, then the locus of P is

EASY
IMPORTANT

The line x+y=6 is a normal to the parabola y2=8x at the point

MEDIUM
IMPORTANT

If y=mx+4 is a tangent to both the parabolas, y2=4x and x2=2by, then b is equal to

MEDIUM
IMPORTANT

If 2x+3y=α, x-y=β and kx+15y=r are 3 concurrent normals of parabola y2=λx, then the value of k is

MEDIUM
IMPORTANT

The point on the parabola y2=8x at which the normal is inclined at 60° to the x-axis has the coordinates

EASY
IMPORTANT

The equation of tangent with slope 27 to Parabola 2x2=7y  is ......

MEDIUM
IMPORTANT

If 2x+3y=α, x-y=β and kx+15y=r are 3 concurrent normals of parabola y2=λx, then the value of k is

HARD
IMPORTANT

The equation of the common tangent to the curves y2=4x and x2+32y=0 is x+by+c=0. The value of sin1sin1+sin1sinb+sin1sinc is equal to

HARD
IMPORTANT

Tangents are drawn from a point P to parabola y2=16x enclosing an angle of 45°. Then, locus of point P will be

EASY
IMPORTANT

Given a parabola y2=4ax, if line y=3x-8 touches the parabola at point pα,β, then 18α+β24-β=

EASY
IMPORTANT

The point on the parabola y2=8x at which the normal is inclined at 60° to the x-axis has the coordinates

HARD
IMPORTANT

Find the locus of the point P if tangents PQ and PR are drawn to the parabolas y2=20x+5 and y2=60x+15 respectively, such that RPQ=π2

HARD
IMPORTANT

The equation of image of parabola y2=4x about the tangent of parabola y2=4x at P(1, 2) is

HARD
IMPORTANT

The area of the triangle formed by tangents of the parabola y2=8x at the three points on the parabola having parameter t1, t2 and t3 is

HARD
IMPORTANT

Number of common normals to the circle x-52+y2=9 and the parabola y2=8x, is

HARD
IMPORTANT

If the line y=mx+c is tangent to the circle x2+y2=5r2 and the parabola y2-4x-2y+4λ+1=0 and point of contact of the tangent with the parabola is 8,5, then find the value of 25r2+λ+2m-c.