Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
For an acute angle
ϕ
\phi
ϕ
,
tan
ϕ
=
2
3
\tan\phi=\dfrac{2}{3}
tan
ϕ
=
3
2
. Calculate
tan
2
ϕ
\tan 2\phi
tan
2
ϕ
.
Browse the problem library