Problem 2:
a) Find an equation of the plane that passes through the points A(2, 1, 1, ),
B(-1,-1, 10) and C(1,3,4)
b) Find symmetric equations for the line through B that is perpendicular
to the plane in part a).
c) A second plane passes through (2,0, 4) and has normal vector (2, -4, -3).
Show that the acute angle between the planes is approximately 43°.
d) Find parametric equations for the line of intersection of the two planes.