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THREE D IMENSIONAL G EOMETRY
493
EXERCISE 11 3
1 In each of the following cases, determine the direction cosines of the normal to
the plane and the distance from the origin (a)
z = 2
(b)
x + y + z = 1
(c)
2x + 3y – z = 5
(d)
5y + 8 = 0
2