摘要： //cos(A+B)=cosAcosB-sinAsinB;//sin(A+B)=sinAcosB+cosAsinB;cos(a+b)=s/r;s=r*cos(a+b);s=r*cos(a)cos(b)-r*sin(a)sin(b);cos(a)=x/r;x=r*cos(a);sin(a+b)=t/r;t=r*sin(a+b);t=r*sin(a)cos(b)+r*cos(a)sin(b);sin(a)=y/r;y=r*sin(a);x=r*cos(a);y=r*sin(a);s=r*cos(a)cos(b)-r*sin(a)sin(b);t=r*sin(a)cos(b)+r*cos(a)sin 阅读全文