﻿ If a2 + b2 – c2 – 2ab = 0 then the point of concurrency of family of straight lines ax + by + c = 0lies on the line – : Kaysons Education

# If A2 + B2 – C2 – 2ab = 0 Then The Point Of Concurrency Of Family Of Straight Lines Ax + By + C = 0lies On The Line –

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#### SIMILAR QUESTIONS

Q1

If pairs of lines 3x2 – 2pxy – 3y2 = 0 and 5x2 – 2qxy – 5y2 = 0 are such that each pair bisects the angle between the other pair, then pq is equal to

Q2

The line x + y = 1 meets the line represented by the equation y3 –xy2 – 14x2y + 24x3 = 0 at the points ABC. If O is the origin, then

OA2 + OB2 + OC2 is equal to

Q3

If the area of the triangle formed by the pair of lines 8x2 – 6xy + y2 = 0 and the line 2x + 3y = a is 7, then a is equal to

Q4

If p is length of the perpendicular from the origin on the line  are in A.P. then ab is equal to

Q5

If two of the lines given by the equation ax3 – 9yx2 – y2x + 4y3 = 0 are perpendicular then a is equal to

Q6

The number of straight lines equidistant from three non-collinear points in the plane of the points is equal to

Q7

A line bisecting the ordinate PN of a point P(at2, 2at), t > 0 on the parabola y2 = 4ax, a > 0 is drawn parallel to the axis to meet the curve at Q. If NQ and the tangent at the point P meet at, T, then the coordinates of point T is (where point N lie on the axis)

Q8

If the pair of line  intersect on x-axis, then α is equal to –

Q9

If the area of the rhombus enclosed by the lines  be 2 square units, then

Q10

All chords of the curve 3x2 – y2 –2x + 4y = 0 that subtends a right angle at the origin, pass through a fixed point whose co-ordinate is –