9.5 Distance from a point to a line in R^2 and R^3 Flashcards

1
Q

how to calculate the distance between parallel lines in vector equation form?

A
  1. write the point from one of the planes and call it A
  2. write the parametric equations of the other plane
  3. make the parametric equation into a point and call it C

4.find the direction vector of AC

  1. calculate the dot product of AC and the direction vector and solve for t
  2. determine point C by plugging in the t value
  3. calculate the distance between point A and C
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2
Q

how to calculate the distance between two lines in vector equation form

A
  1. write the parametric equations of the other plane
  2. write the point from one of the planes and call it A
  3. make the parametric equation into a point and call it C

4.find the direction vector of AC

  1. calculate the dot product of AC and the direction vector and solve for t
  2. determine point C by plugging in the t value
  3. calculate the distance between point A and C
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3
Q

what is the distance between two points formula?

A

d=square root (x2-x1)^2+(y2-y1)^2+(z2-z1)^

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4
Q

how to calculate the distance between two parallel planes?

A
  1. find a point in one of the planes

2.Use the point, the other plane and the distance between a point and a plane equation to find the distance

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5
Q

what is the distance between a point and a plane equation?

A

d=|Axo+Byo+C|/square root A^2+B^2

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6
Q

How to calculate the distance between a point and line in vector equation form?

A
  1. Label the point given as point P
  2. Label the point in the vector equation as point Q
  3. Find the direction vector of PQ
  4. Label the direction vector in the vector equation as M
  5. Find the cross product of direction M and PQ
  6. Use the formula of the distance between a point and a line to find the distance
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7
Q

How to determine the coordinates of a point on the line in vector equation form that produces the shortest distance between the line and a point?

A
  1. Label the point given A
  2. Write the parametric equations of the vector equation
  3. make the parametric equation into a point and call it C
  4. find the direction vector of AC
  5. calculate the dot product of AC and the direction vector and solve for t
  6. determine point C by plugging in the t value. the C point is the answer
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8
Q

what is the distance between a point and a line equation?

A

d=|m X QP|/|m|

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9
Q

how to calculate the distance between two parallel lines in vector equation form?

A

same steps as finding the distance between two lines vector equation form

  1. write the point from one of the planes and call it A
  2. write the parametric equations of the other plane
  3. make the parametric equation into a point and call it C
    4.find the direction vector of AC
  4. calculate the dot product of AC and the direction vector and solve for t
  5. determine point C by plugging in the t value
  6. calculate the distance between point A and C
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