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Mathematics
Mathematics
Problem
Find
cos
θ
\cos\theta
cos
θ
when
sin
θ
=
4
5
\sin\theta = \dfrac{4}{5}
sin
θ
=
5
4
and
0
<
θ
<
π
2
0<\theta<\dfrac{\pi}{2}
0
<
θ
<
2
π
.
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