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Show that the three lines with directio...

Show that the three lines with direction cosines `(12)/(13),(-3)/(13),(-4)/(13),4/(13),(12)/(13),3/(13);3/(13),(-4)/(13),(12)/(13)`are mutually perpendicular.

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Show that the three lines with direction cosines quad (12)/(13),(-3)/(13),(-4)/(13),(4)/(13),(12)/(13),(3)/(13);(3)/(13),(-4)/(13),(12)/(13) are mutually perpendicular.

Check if lines with direction-cosines : lt (12)/(13) , - (3)/(13) , - (4)/(13) gt , lt (4)/(13) , (12)/(13), (3)/(13) gt , lt (3)/(13) , (4)/(13) , (12)/(13) gt are mutually perpendicular .

(-4)/(13)+0=0+(-4)/(13)

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Solve : 4/(13)+2/(13)+1/(13)

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MODERN PUBLICATION-THREE DIMENSIONAL GEOMETRY -EXERCISE 11 (B) (SHORT ANSWER TYPE QUESTIONS )
  1. Show that the three lines with direction cosines (12)/(13),(-3)/(13),...

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  2. Express the following equation of the lines into vector form : (x -...

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  3. Find the cartesian as well as the vector equation of the line passing ...

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  4. (A) The cartesian equations of a line are : (i) (x - 5)/(3) = (y + ...

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  5. (A) find the equation of a line parallel to x-axis and passing through...

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  6. (A ) Find the vector and cartesian equations of the line through the p...

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  7. Find the equation of the line in vector and in cartesian form that ...

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  8. Find the vector equation of the line passing thought the points (-1,\ ...

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  9. Find the vector and cartesian equations of the line that passes throug...

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  10. (A ) Find the equation of a st. line through (-1,2,3) and equally incl...

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  11. Find the angle between the pairs of lines with direction-ratios : (...

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  12. The angle between a line with direction ratios proportional to 2, 2, ...

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  13. Find the angle between the following pairs of lines : (i) vec(r) = ...

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  14. Show that the lines : (i) (x -5)/(7) = (y + 2)/(-5) = (z)/(1) " " a...

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  15. (i) Find the value of 'p' so that the lines : l(1) : (1 - x)/(3) = (...

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  16. Show that the line through the points : (a) (1, -1, 2), (3,4,-2) is ...

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