Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If
tan
2
θ
=
2
tan
2
ϕ
+
1
\tan^2 \theta = 2 \tan^2 \phi + 1
tan
2
θ
=
2
tan
2
ϕ
+
1
, prove that
cos
2
θ
+
sin
2
ϕ
=
0
\cos 2\theta + \sin^2 \phi = 0
cos
2
θ
+
sin
2
ϕ
=
0
.
Browse the problem library