(a+bi)±(c+di)=(a±c)+(b±d)i
(a+bi)(c+di)=(ac-bd)+(ad+bc)i
(a+bi)/(c+di)=(ac+bd)/(c²+d²)+(bc-ad)i/(c²+d²)
r1(isina+cosa)r2(isinb+cosb)=r1r2[cos(a+b)+isin(a+b)]
r1(isina+cosa)/r2(isinb+cosb)=r1/r2[cos(a-b)+isin(a-b)]
r(isina+cosa)n=(isinna+cosna)
1、sin(a+bi)=sin(a)cos(bi)+sin(bi)cos(a)=sin(a)cosh(b)+isinh(b)cos(a)
2、cos(a-bi)=cos(a)cos(bi)+sin(bi)sin(a)=cos(a)cosh(b)+isinh(b)sin(a)
3、tan(a+bi)=sin(a+bi)/cos(a+bi)
4、cot(a+bi)=cos(a+bi)/sin(a+bi)
5、sec(a+bi)=1/cos(a+bi)
6、csc(a+bi)=1/sin(a+bi)