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Find the angle between the lines whose d...

Find the angle between the lines whose direction ratios are `(1,1,2)(sqrt(3), -sqrt(3),0)`

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Find the conine of the angle between the lines whose direction cosines are ((1)/(sqrt(3)),(1)/(sqrt(3)),(1)/(sqrt(3)))and((1)/(sqrt(2)),(1)/(sqrt(2)),0) .

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SRISIRI PUBLICATION-IPE SCANNER (TEXTUAL BITS)-3D - GEOMETRY
  1. The incentre of the triangle formed by (0,0,0),(3,0,0),(0,4,0) is

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  2. A,B,C are three points OX,OY,OZ respectively, at distance a,b,c from t...

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  3. P is a variable point which moves such that 3PA =2PB. If A(-2,2,3) and...

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  4. Show that the point whose distance from Y-axis in thrice its distance ...

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  5. Find the centroid of triangle ABC where A (6,-2,7), B(3,-6,10), C(6,2,...

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  6. The centroid of the tetrahedron whose vertices are (4,1,-2), (-3,3,-...

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  7. A(5,4,6), B(1,-1,3),C(4,3,2) are three points. Find the coordinates of...

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  8. If the origin is shifted to the point (1, 2) by a translation of the a...

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  9. Find the ratio in which the point P(5,4,-6) divides the line segment j...

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  10. A line makes angles 90^(@), 60^(@) , 30^(@) with the positive directio...

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  11. Find the direction cosines of the line joining the points (-4,1,7),(2,...

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  12. Find the dr's and dc'r of the line joining the points (4,-7,3),(6,-5,2...

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  13. If the d.c's of a line are (1//c,1//c,1c) then find c.

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  14. Find the angle between the lines whose direction ratios are (1,1,2)(sq...

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  15. O is the origin , P(2,3,4), Q(1,k,1) are points such that bar(OP) | ba...

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  16. Show that the line joining the points A(2,3,-1) and B(3,5,-3) is perpe...

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  17. For what value of x the line joining A(4,1,2), B(5,x,0) is perpendicul...

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  18. If the line joining the points A(2,3, -1) and B(3, 5, -3) is perpendic...

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  19. A ray makes angles pi//3, pi//3 with bar(OX) and bar(OY) respectively....

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  20. If alpha, beta, gamma are the angles made by a line with the positive ...

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