IF TAN 2A = COT {A-12} FIND A
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tan2A = cot {A-12}
tan(90-2A)=cot {A-12}
cot(90-2A)=cot { A - 12}
(90-2A)= { A-12 }
90-2A= A -12
-2A-A = -12-90
-3A=-102
A = 102/3
A=34
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