\operatorname { sin } ( A - B ) = \frac { 1 } { 2 } , \operatorname { – InterviewSolution

1.	\operatorname { sin } ( A - B ) = \frac { 1 } { 2 } , \operatorname { cos } ( A + B ) = \frac { 1 } { 2 } , 0 ^ { 0 } < A + B \leq 90 ^ { \circ } A > B ,
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