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Find length of latus rectum of the parabola y2 = 4ax passing through the point (2, –6)
Concept: undefined >> undefined
Find the area of the triangle formed by the line joining the vertex of the parabola x2 = 12y to the end points of latus rectum.
Concept: undefined >> undefined
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If a parabolic reflector is 20 cm in diameter and 5 cm deep, find its focus.
Concept: undefined >> undefined
Find coordinate of focus, vertex and equation of directrix and the axis of the parabola y = x2 – 2x + 3
Concept: undefined >> undefined
Find the equation of tangent to the parabola y2 = 12x from the point (2, 5)
Concept: undefined >> undefined
Find the equation of tangent to the parabola y2 = 36x from the point (2, 9)
Concept: undefined >> undefined
If the tangent drawn from the point (–6, 9) to the parabola y2 = kx are perpendicular to each other, find k
Concept: undefined >> undefined
Two tangents to the parabola y2 = 8x meet the tangents at the vertex in the point P and Q. If PQ = 4, prove that the equation of the locus of the point of intersection of two tangent is y2 = 8(x + 2).
Concept: undefined >> undefined
Find the equation of common tangent to the parabola y2 = 4x and x2 = 32y
Concept: undefined >> undefined
Find the equation of the locus of a point, the tangents from which to the parabola y2 = 18x are such that some of their slopes is –3
Concept: undefined >> undefined
The tower of a bridge, hung in the form of a parabola have their tops 30 meters above the roadway and are 200 meters apart. If the cable is 5 meters above the roadway at the centre of the bridge, find the length of the vertical supporting cable 30 meters from the centre.
Concept: undefined >> undefined
A circle whose centre is (4, –1) passes through the focus of the parabola x2 + 16y = 0.
Show that the circle touches the directrix of the parabola.
Concept: undefined >> undefined
Select the correct option from the given alternatives:
The line y = mx + 1 is a tangent to the parabola y2 = 4x, if m is _______
Concept: undefined >> undefined
Select the correct option from the given alternatives:
The length of latus rectum of the parabola x2 – 4x – 8y + 12 = 0 is _________
Concept: undefined >> undefined
Select the correct option from the given alternatives:
If the focus of the parabola is (0, –3) its directrix is y = 3 then its equation is
Concept: undefined >> undefined
Select the correct option from the given alternatives:
The coordinates of a point on the parabola y2 = 8x whose focal distance is 4 are _______
Concept: undefined >> undefined
Select the correct option from the given alternatives:
The endpoints of latus rectum of the parabola y2 = 24x are _______
Concept: undefined >> undefined
Select the correct option from the given alternatives:
Equation of the parabola with vertex at the origin and directrix x + 8 = 0 is __________
Concept: undefined >> undefined
Select the correct option from the given alternatives:
The area of the triangle formed by the line joining the vertex of the parabola x2 = 12y to the endpoints of its latus rectum is _________
Concept: undefined >> undefined
Select the correct option from the given alternatives:
The equation of the parabola having (2, 4) and (2, –4) as endpoints of its latus rectum is _________
Concept: undefined >> undefined
