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The coordinate axes are roted about the ...

The coordinate axes are roted about the origin O in the counterclockwise direction through an angle `60^(@)`. If p and q are the intercepts made on the new axes by a straight line whose equation refered to the original axes is `x+y=1` then `1//p^(2)+1//q^(2)=`

A

2

B

4

C

6

D

8

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DIPTI PUBLICATION ( AP EAMET)-STRAIGHT LINES -EXERCISE 1A
  1. The equation of the line whose x-intercept is -3//7 and which is perpe...

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  2. The distance between the parallel lines 5x+2y+7=0 and 5x+2y+4=0 is

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  3. The coordinate axes are roted about the origin O in the counterclockwi...

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  4. The sides of a triangle are 3x+2y-6=0, 2x-3y+6=0, x+2y+2=0. P(0,b) is ...

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  5. A straight line through the point (2, 2) intersects the lines sqrt(3)x...

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  6. A straight line L is perpendicular to the line 5x-y=1. The area of the...

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  7. Each sides of a square is of lemgth 4 units. The centre of the square ...

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  8. A(-1, 1), B(5, 3) are opposite vertices of a square. The equation of t...

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  9. (-4,5) is a vertex of a square and one of its diagonals is 7x-y+8=0. F...

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  10. If A(1, 1), B(sqrt(3)+1,2) and C(sqrt(3), sqrt(3)+2) be three vertice...

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  11. In a rhombus ABCD the diagonals AC and BD intersect at the point (3, 4...

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  12. Points A(1, 3) and C(5, 1) are oppsite vertices of a rectangle ABCD. I...

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  13. If the straight lines y=4-3x, ay=x+10, 2y+bx+9=0 represent the three c...

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  14. If the lines y=4-3x,ay=x+10, 2y+bx+9=0 form three sides of the rectang...

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  15. One side of a rectangle lies along the line 4x+7y+5=0. Two of its vert...

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  16. The points (1, 3) and (5, 1) are two opposite vertices of a rectangle....

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  17. The points (1, 6) and (12, 9) are two opposite vertices of a parallelo...

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  18. The number of points P(x, y) with natural numbers as coordinates that ...

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  19. Let A(2, -3) and B(-2, 1) be vertices of a triangle ABC. If the centro...

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  20. A(2, 3), B(3, -5) are two vertices of DeltaABC. C is a point the line ...

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