1.

\frac { \operatorname { cos } 135 ^ { \circ } - \operatorname { cos } 120 ^ { \circ } } { \operatorname { cos } 135 ^ { \circ } + \operatorname { cos } 120 ^ { \circ } } = 3 - 2 \sqrt { 2 }

Answer»


Discussion

No Comment Found