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If one of the lines given by ax2 + 2hxy + by2 = 0 bisects an angle between the coordinate axes, then show that (a + b)2 = 4h2.
Concept: Homogeneous Equation of Degree Two
Find the coordinates of the points of intersection of the lines represented by x2 − y2 − 2x + 1 = 0
Concept: General Second Degree Equation in x and y
If the lines represented by kx2 − 3xy + 6y2 = 0 are perpendicular to each other, then
Concept: Equation of a Line in Space
The area of triangle formed by the lines x2 + 4xy + y2 = 0 and x - y - 4 = 0 is ______.
Concept: Combined Equation of a Pair Lines
Find the joint equation of the line passing through the origin having slopes 2 and 3.
Concept: Combined Equation of a Pair Lines
Show that the difference between the slopes of the lines given by (tan2θ + cos2θ)x2 − 2xy tan θ + (sin2θ)y2 = 0 is two.
Concept: Angle between lines represented by ax2 + 2hxy + by2 = 0
The separate equations of the lines represented by `3x^2 - 2sqrt(3)xy - 3y^2` = 0 are ______
Concept: Equation of a Line in Space
The combined equation of the lines through origin and perpendicular to the pair of lines 3x2 + 4xy − 5y2 = 0 is ______
Concept: Combined Equation of a Pair Lines
Find the value of h, if the measure of the angle between the lines 3x2 + 2hxy + 2y2 = 0 is 45°.
Concept: Angle between lines represented by ax2 + 2hxy + by2 = 0
Show that the combined equation of pair of lines passing through the origin is a homogeneous equation of degree 2 in x and y. Hence find the combined equation of the lines 2x + 3y = 0 and x − 2y = 0
Concept: Combined Equation of a Pair Lines
If θ is the acute angle between the lines given by ax2 + 2hxy + by2 = 0 then prove that tan θ = `|(2sqrt("h"^2) - "ab")/("a" + "b")|`. Hence find acute angle between the lines 2x2 + 7xy + 3y2 = 0
Concept: Angle between lines represented by ax2 + 2hxy + by2 = 0
Find the joint equation of pair of lines through the origin which is perpendicular to the lines represented by 5x2 + 2xy - 3y2 = 0
Concept: Equation of a Line in Space
If the angle between the lines represented by ax2 + 2hxy + by2 = 0 is equal to the angle between the lines 2x2 − 5xy + 3y2 = 0, then show that 100(h2 − ab) = (a + b)2
Concept: Angle between lines represented by ax2 + 2hxy + by2 = 0
Equation of line passing through the points (0, 0, 0) and (2, 1, –3) is ______.
Concept: General Second Degree Equation in x and y
Write the separate equations of lines represented by the equation 5x2 – 9y2 = 0
Concept: Combined Equation of a Pair Lines
Find the value of k. if 2x + y = 0 is one of the lines represented by 3x2 + kxy + 2y2 = 0
Concept: Homogeneous Equation of Degree Two
Find the vector equation of the lines passing through the point having position vector `(-hati - hatj + 2hatk)` and parallel to the line `vecr = (hati + 2hatj + 3hatk) + λ(3hati + 2hatj + hatk)`.
Concept: Equation of a Line in Space
Write the joint equation of co-ordinate axes.
Concept: Combined Equation of a Pair Lines
If ax2 + 2hxy + by2 = 0 represents a pair of lines and h2 = ab ≠ 0 then find the ratio of their slopes.
Concept: Angle between lines represented by ax2 + 2hxy + by2 = 0
If θ is the acute angle between the lines represented by ax2 + 2hxy + by2 = 0 then prove that tan θ = `|(2sqrt(h^2 - ab))/(a + b)|`
Concept: Angle between lines represented by ax2 + 2hxy + by2 = 0
