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In a triangle ABC, if A-=(1,2) and the i...

In a triangle ABC, if A-=(1,2) and the internal angle bisectors through B and C are y=x and y=-2x, then the inradius r of `DeltaABC` is

A

(7, 2), (4, 2)

B

(7, -2), (4, 3)

C

(5, 2), (4, 3)

D

none

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-STRAIGHT LINES -EXERCISE 1B
  1. Let P(-1,0), Q(0,0) and R(3,3sqrt(3)) be three points. The equation of...

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  2. In DeltaABC, if B = (1, 2), C = (5, 6) and the internal bisector of th...

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  3. In a triangle ABC, if A-=(1,2) and the internal angle bisectors throug...

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  4. The base of a triangle lies along the line x=a and is of length a. The...

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  5. A(1, 0), B(0, 1) are two points. If P(x, y) is a point such that xy gt...

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  6. The quadrilateral formed by the lines x+8y+37=0, 7x-6y+11=0, x+8y-87=0...

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  7. The lines 2x+y=1, x+2y=1, 2x+y=3, x +2y=3 form

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  8. The quadrilateral formed by the lines x-y+2=0, x+y=0, x-y-4=0, x+y-12=...

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  9. The quadrilateral formed by the lines x+y-3=0, x-y+3=0, x+y+1=0, x-y-1...

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  10. The quadrilateral formed by the lines sqrt(3)x+y=0,sqrt(3)y+x=0, sqrt(...

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  11. The are of the quadrilateral formed by the lines x-y+2=0, x+y=0, x-y-4...

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  12. A : The area of the parallelogram formed by 4x-7y-13=0, 8x-y-39=0, 4x-...

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  13. The area of the quadrilateral formed by the lines a|x|+b|y|+c=0 is

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  14. Find the area enclosed with in the curve |x| +|y|=1

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  15. The area of the parallelogram formed by the lines 4y-3x-a=0, 3y-4x+a=...

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  16. P(2, 1), Q(4, -1), R(3, 2) are the vertices of a triangle and if throu...

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  17. A point moves in the xy-plane such that the sum of its distances from ...

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  18. The angle between the lines 4x-y+9=0, 25x+15y+27=0 is

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  19. The angle between the lines x cos alpha+y sin alpha=p(1) and x cos bet...

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  20. The angle between the lines formed by joining the points (2, -3), (-5,...

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