1.

The expression $$\frac{{\tan {{57}^ \circ } + \cot {{37}^ \circ }}}{{\tan {{33}^ \circ } + \cot {{53}^ \circ }}}$$is equal to?

A. an30° cot57°
B. an57° cot37°
C. an33° cot 53°
D. an33° cot37°
Answer» C. an33° cot 53°


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