If sin (A − B) = 12,cos (A + B) = 1...
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If ( sin (A-B)=frac{1}{2}, cos (A+B)=frac{1}{2}, 0^{circ}B, ) find ( A ) and ( B )

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If sin (A − B) = 12,cos (A + B) = 12,0∘ B, find A and B
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( sin (A-B)=frac{1}{2}=sin left(30^{circ}right) & Rightarrow A-B=30^{circ} )
( cos (A+B)=frac{1}{2}=cos left(60^{circ}right)=A+B=60^{circ} )
( Rightarrow 2 A=90^{circ} Rightarrow A=45^{circ} quad & B=15^{circ} )

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