If the line x=1+(a+2)t, y=1-bt, z=-1+(c-1)t and the plane -x+2y-3z=0 are orthogonal to each other. Find a, b and c.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter10: Analytic Geometry
Section10.6: The Three-dimensional Coordinate System
Problem 21E
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If the line x=1+(a+2)t, y=1-bt, z=-1+(c-1)t and the plane -x+2y-3z=0 are orthogonal to each other. Find a, b and c.

Expert Solution
Step 1

The parametric equation of the given line is 

x=1+a+2ty=1-btz=-1+c-1t

The general form of the parametric equation of a line is

x=x0+lty=y0+mtz=z0+nt

Compare the given parametric equation with the general form, we get l=a+2, m=-b, n=c-1.

The equation of the given plane is -x+2y-3z=0.

The general form of the equation of a plane is px+qy+rz=k.

Compare the equation of the given plane with general form and obtain p=-1, q=2, r=-3.

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