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Mathematics
Mathematics
Problem
11. Show that the lines
x
−
5
7
=
y
+
2
−
5
=
z
1
\frac{x-5}{7}=\frac{y+2}{-5}=\frac{z}{1}
7
x
−
5
=
−
5
y
+
2
=
1
z
and
x
1
=
y
2
=
z
3
\frac{x}{1}=\frac{y}{2}=\frac{z}{3}
1
x
=
2
y
=
3
z
are perpendicular to each other.
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