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The Brainliest Answer!
2015-06-19T13:06:34+05:30
Sin(A-B)=sin30  { ..sin1\2 =  30  }
cos (A+B) =cos  90 {since cos 1\2=90}
A-B=30.....................1
A+B=90....................2
FROM Eq 1 and 2 we have ;
A-B=30
A+B=90

             2A=120
A=60
SUBTITUTE THE VALUE OF A IN A-B=30 WE GET ;
60-B=30
-B=30-60
-B=-30
B=30
                   ANS = A=60 B=30
2 5 2
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