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Mathematics
Mathematics
Problem
The expression
tan
A
1
−
cot
A
+
cot
A
1
−
tan
A
\frac{\tan A}{1-\cot A} + \frac{\cot A}{1-\tan A}
1
−
c
o
t
A
t
a
n
A
+
1
−
t
a
n
A
c
o
t
A
can be written as:
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