Sina-2cos3a-sin5a/cosa+2sin3a-cos5a

- (64sin (alpha) ^8+(16cos (2) -128) sin (alpha) ^6+(16sin (2) cos (alpha)+4) sin (alpha) ^5+(80-28cos (2) sin (alpha) ^4+(-12sin (2) cos (alpha) -5) sin (alpha) ^3+(4cos (2) sin (2) cos (alpha)+13cos (2) -15) sin (alpha) ^2+(sin (2) cos (alpha)+1) sin (alpha) -cos (2) sin (2) cos (alpha) -cos (2) / (sin (2) sin (alpha) -cos (2) cos (alpha)