在圆O中,直径AB=4,弦AC=2根号3.弦AD=根号2

弦AC的所对圆心角A1=2*ARC SIN((AC/2)/(AB/2))=2*ARC SIN((2*3^0.5/2)/(4/2))=2*ARC SIN(3^0.5/2)=120度弦AD的所对圆心角A2=2*ARC SIN((AD/2)/(AB/2))=2*ARC SIN((2^0.5/2)/(4/2))=2*ARC SIN(2^0.5/4)=41.41度弧CD的...