ok another question lol.....i equated the real and imaginary parts and im trying to figure out wat tan4@ equals. This is wat i hav im not sure if its right:
tan4@=sin4@/cos4@
tan4@=4isin@cos^3@-4icos@sin^3@/8cos^4@-8cos^2@
tan4@=......dunno where to go lol