Line in space

1. What do we know about the properties of a line in space?

Solution:

line-in-space-1 

line-in-space-2


2. Write the parametric equation of the line that passes through point A [2;4;-3], parallel to line BC, where B [3;2;-1], C [7;1;9]. Determine which of the points M [-1;2;0], N [6;3;7] lies on this line.

Solution:

line-in-space-2

The point N [6;3;7] lies on line p.


3. Line p is parallel to line AB if A [4;-7;2], B [-1;3;6]. Determine Yc and Zc so that the point C [2;Yc;Zc] also lies on this line.

Solution:

line-in-space-3


4. Given triangle ΔABC with vertices A [-2;5;4], B [2;3;-1], C [2;7;-2]. Write the parametric equations of the sides of the triangle a = BC, b = AC, c = AB

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5. Given point M [3;2;-1] and the parametric equation of line p

line-in-space-5-problem

Write:

a) the equations of line q that passes through point M and is parallel to p

b) the equations of line q that passes through point M and is perpendicular to p

c) the equations of line q that is parallel to the y-axis

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6. Determine the mutual position of the lines whose parametric equations are

line-in-space-6-problem
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7. Two lines p and q are given. Determine their mutual position. If they intersect, find their intersection point and the angle between them.

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8. Determine the mutual position of lines p and q, their intersection point and the angle they form. Also calculate the distance from point M [5;-1;4] to the intersection of the lines.

line-in-space-8-problem 

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9. Decide which of the points A, B lies on line p, if it holds

line-in-space-9-problem
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10. Write the parametric equation of the line that passes through points A [3;-7;2], B [5;-4;1] and determine the coordinates x, z of point C [x;2;z] so that it lies on line p.

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11. Determine the mutual position of lines p and q in space if:

line-in-space-11-problem
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12. Determine the mutual position of lines p and q in space if:

line-in-space-12-problem
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13. Determine the angle (inclination) between lines p and q in space if:

line-in-space-13-problem
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14. Determine the angle between lines p and q in space if:

line-in-space-14-problem
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15. Given points A, B, C. Write the parametric equation of line p that passes through the midpoints of segments AB and BC. Solve for the points:

line-in-space-15-problem
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16. Calculate the distance from point M to line p, if:

line-in-space-16-problem
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17. Given lines p and q. Find a vector that is perpendicular to both direction vectors of the given lines. Solve for the lines:

line-in-space-17-problem
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18. Given lines p and q. Determine "m" so that the lines are non-parallel (intersecting). Determine their intersection.

Solve for the lines:

line-in-space-18-problem

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19. Calculate the distance from point M to the intersection of lines p and q. Solve for point M [2;3;–23] and the lines:

line-in-space-19-problem
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20. Given point A [-1;4;2]. On the y-axis determine point M such that |AM| = 3. Also write the parametric equation of line AM.

line-in-space-20-problem
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