sin122=sin(180-58)=sin58
sin53=sin(90-37)=cos37
cos58度sin37度+sin122度sin53度
=cos58sin37+sin58cos37
=sin(58+37)
=sin95
=sin(90+5)
=cos5
sin122=sin(180-58)=sin58
sin53=sin(90-37)=cos37
cos58度sin37度+sin122度sin53度
=cos58sin37+sin58cos37
=sin(58+37)
=sin95
=sin(90+5)
=cos5