Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
If
sin
θ
=
3
5
\sin\theta = \dfrac{3}{5}
sin
θ
=
5
3
and
θ
\theta
θ
is acute, find (i)
sin
2
θ
\sin 2\theta
sin
2
θ
, (ii)
cos
2
θ
\cos 2\theta
cos
2
θ
.
Browse the problem library