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Mathematics
Mathematics
Problem
Given
sin
A
=
3
5
\sin A = \dfrac{3}{5}
sin
A
=
5
3
for an acute angle
A
A
A
, find
cos
A
\cos A
cos
A
. a)
3
4
\dfrac{3}{4}
4
3
b)
3
5
\dfrac{3}{5}
5
3
c)
4
5
\dfrac{4}{5}
5
4
d)
5
3
\dfrac{5}{3}
3
5
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