If Sin (A-B)=1/2 and Cos (A-B)=1/2 find A and B. ☺
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a-b=1/2
split it as a and -b
when a=1 and -b=1/2 so, b=1/2
split it as a and -b
when a=1 and -b=1/2 so, b=1/2
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