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Line x/a+y/b=1 cuts the co-ordinate axes...

Line `x/a+y/b=1` cuts the co-ordinate axes at A(a,0) and B(0,b) and the line `x/(a')+y/(b')=-1` at `A'(-a',0)` and `B'(0,-b')`. If the points A,B,A',B' are concyclic then the orthocentre of triangle ABA' is

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CENGAGE PUBLICATION-STRAIGHT LINES-All Questions
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  2. In a plane there are two families of lines y=x+r, y=-x+r, where r in {...

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  3. Line x/a+y/b=1 cuts the co-ordinate axes at A(a,0) and B(0,b) and the ...

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  4. If P is a point (x,y) on the line y=-3x such that P and the point (3...

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  5. If the points (1,2) and (3, 4) are on the opposite side of the line 3x...

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  6. Line segment AB of fixed lengh c slides between coordinate axes such t...

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  7. All points lying inside the triangle formed by the points (1,3),(5,0)a...

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  8. The equation to the straight line passing through the point (a "cos"^(...

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  9. The equation of a straight line on which the length of perpendicular ...

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  10. The number of integral values of m for which the x-coordinate of the p...

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  11. If the equation of base of an equilateral triangle is 2x-y=1 and the v...

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  12. The equation of straight line passing through (-a ,0) and making a tr...

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  13. The line P Q whose equation is x-y=2 cuts the x-axis at P ,a n dQ is (...

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  14. If the equation of the locus of a point equidistant from the points (a...

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  15. If the extremities of the base of an isosceles triangle are the points...

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  16. A triangle is formed by the lines x+y=0,x-y=0, and l x+m y=1. If la n ...

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  17. The line x+y=p meets the x- and y-axes at Aa n dB , respectively. A ...

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  18. A is a point on either of two lines y+sqrt(3)|x|=2 at a distance of 4/...

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  19. A pair of perpendicular straight lines is drawn through the origin f...

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