Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If
x
=
r
sin
θ
cos
ϕ
x = r \sin \theta \cos \phi
x
=
r
sin
θ
cos
ϕ
,
y
=
r
sin
θ
sin
ϕ
y = r \sin \theta \sin \phi
y
=
r
sin
θ
sin
ϕ
and
z
=
r
cos
θ
z = r \cos \theta
z
=
r
cos
θ
. Find the value of
x
2
+
y
2
+
z
2
x^2 + y^2 + z^2
x
2
+
y
2
+
z
2
.
Browse the problem library