Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If a line lies in the octant
O
X
Y
Z
OXYZ
O
X
Y
Z
and it makes equal angles with the axes, then (a)
l
=
m
=
n
=
1
3
l = m = n = \frac{1}{\sqrt{3}}
l
=
m
=
n
=
3
1
(b)
l
=
m
=
n
=
±
1
3
l = m = n = \pm \frac{1}{\sqrt{3}}
l
=
m
=
n
=
±
3
1
(c)
l
=
m
=
n
=
−
1
3
l = m = n = -\frac{1}{\sqrt{3}}
l
=
m
=
n
=
−
3
1
(d)
l
=
m
=
n
=
±
1
2
l = m = n = \pm \frac{1}{\sqrt{2}}
l
=
m
=
n
=
±
2
1
Browse the problem library