Find the distance between the skew lines with parametric
equations x = 1 + t, y = 3 +
6t, z = 2t, and
x = 1 + 2s, y = 6 + 15s, z
= −2 + 6s.
Find the equation of the line that passes through the points on
the two lines where the shortest distance is measured.
(a) Find the cosine of the angle between the lines L1 and L2 whose vector equations are given below:
L1 : ~r1(t) = [1, 1, 1] + t[1, 2, 3]
L2 : ~r2(t) = [1, 1, 1] + t[−1, 4, 2].
(b) Find the equation of the plane that contains both L1 and L2.
A curve c is defined by the parametric equations
x= t^2 y= t^3-4t
a) The curve C has 2 tangent lines at the point (6,0). Find
their equations.
b) Find the points on C where the tangent line is vertical and
where it is horizontal.
Determine whether the lines:
L1:x=19+5t,y=7+4t,z=13+3t
and
L2:x=−8+6ty=−17+6tz=−8+6t
intersect, are skew, or are parallel. If they intersect,
determine the point of intersection.
Point of intersection ( , , )
I know they intersect, I just don't know where the point is.
Thanks!
3. Consider the parametric curve x = sin 2t, y = − cos 2t for
−π/4 ≤ t ≤ π/4.
(a) (2 pts) Find the Cartesian form of the curve.
(b) (3 pts) Sketch the curve. Label the starting point and
ending point, and draw an
arrow on the curve to indicate the direction of travel.
(c) (5 pts) Find an equation for the curve’s tangent line at the
point
√2/2, −√2/2
.