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The angle between the lines x cos alpha+...

The angle between the lines `x cos alpha+y sin alpha=p_(1) and x cos beta +y sin beta=p_(2)` where `alpha gt beta` is

A

`alpha+beta`

B

`alpha-beta`

C

`alpha beta`

D

`2alpha-beta`

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-STRAIGHT LINES -EXERCISE 1B
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  9. If the acute angle between the lines 4x-y+7=0, kx+5y-9=0 is 45^(@), th...

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  12. If 3x-ky-2=0, 2x+y+2=0 are perpendicular, then the value of k =

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  13. A line passing through the points (a, 2a) and (-2, 3) is perpendicular...

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  14. The value of k such that the straight line (2x+3y+5)+k(x-7y+6)=0 is pa...

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  15. The value of k such that the line 3x+4y+5-k(x+y+3)=0 is parallel to y-...

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  16. The value of k such that the straight line 3x+14y+7+k(5x+7y+6)=0 is pe...

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  17. The value of k such that the line 2x+3y+4+k(6x-y+12)=0 is perpendicula...

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  18. The lines p(p^(2)+1)x-y+q=0 and (p^(2)+1)^(2)x+(p^(2)+1)y+2q=0 are per...

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  19. If the straight liine a(x+y-1)+b(2x-3y+1)=0 for different values of a ...

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  20. The diagonals of the parallelogrma formed by the lines a(1)x+b(1)y+c(1...

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