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If p and p^' are the length of perpendic...

If p and `p^'` are the length of perpendicular drawn from the origin upon the lines
`xsecalpha + ycosecalpha = 0` and
`xcosalpha - ysinalpha - acos2alpha = 0`
Prove that , `4p^2 + p^('2) = a^2`

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MBD PUBLICATION-STRAIGHT LINES-QUESTION BANK
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  2. Show that the lengths of perpendiculars drawn from any point of the st...

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  3. If p and p^' are the length of perpendicular drawn from the origin upo...

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  4. Obtain the equation of the lines passing through the foot of the perpe...

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  5. Find the direction in which a straight line must be drawn through the ...

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  6. A triangle has its vertices at P(1,-1),Q(3,4) and R(2,5). Find the equ...

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  7. Show that the line passing through (6,0) and (-2,-4) is concurrent wi...

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  8. Show that the lines lx + my + n = 0 , mx + ny + l = 0 and nx + ly + m ...

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  9. Obtain the equation of the bisector of the acute angle between the pai...

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  10. Obtain the equation of the bisector of the acute angle between the pai...

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  11. Find the area of the region bounded by the line y = 3x + 2, x-axis and...

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  12. Find the coordinate of the circumcentre and incentre of the triangle f...

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  13. Find the equation of the lines represented by the following equation 4...

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  14. Find the equation of the lines represented by the following equation 2...

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  15. Find the equation of the lines represented by the following equation x...

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  16. Find the equation of the lines represented by the following equation 3...

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  17. From the equations which represents the following Pair of lines. , y...

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  18. From the equations which represents the following Pair of lines y -...

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  19. From the equations which represents the following Pair of lines 2x ...

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  20. From the equations which represents the following Pair of lines x =...

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