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Mathematics
Mathematics
Problem
Show that
1
−
cos
A
sin
A
=
sin
A
1
+
cos
A
\frac{1 - \cos A}{\sin A} = \frac{\sin A}{1 + \cos A}
sin
A
1
−
cos
A
=
1
+
cos
A
sin
A
for an acute angle
A
A
A
.
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