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Mathematics
Mathematics
Problem
If
sin
θ
=
3
5
\sin \theta = \dfrac{3}{5}
sin
θ
=
5
3
and
0
<
θ
<
π
2
0<\theta<\dfrac{\pi}{2}
0
<
θ
<
2
π
, find the value of
cos
2
θ
\cos 2\theta
cos
2
θ
.
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