,L[]CASE ,GAMMA ,EXAMPLES #A4 ,L[]CASE GAMMA EQUALS ?IRTY DEGREES IS WRITT5 _% .G .K #30^.* _: #B4 ,OP5 FRAC;N "O OV] ! COTANG5T ( L[]CASE GAMMA CLOSE FRAC;N EQUALS ! TANG5T ( L[]CASE GAMMA IS WRITT5 _% ?1/COT .G# .K TAN .G _: #C4 ,! COS9E ( OP5 P>5!SIS L[]CASE GAMMA PLUS TWO PI CLOSE P>5!SIS EQUALS ! COS9E ( L[]CASE GAMMA IS WRITT5 _% COS (.G+2.P) .K COS .G _: #D4 ,! COS9E ( TWO L[]CASE GAMMA EQUALS "O M9US TWO S9E SQU>$ L[]CASE GAMMA IS WRITT5 _% COS #2.G .K #1-2SIN^2 .G _: #E4 ,! TANG5T ( OP5 P>5!SIS NEGATIVE L[]CASE GAMMA CLOSE P>5!SIS EQUALS NEGATIVE TANG5T L[]CASE GAMMA IS WRITT5 _% TAN (-.G) .K -TAN .G _: #A #F4 ,S9E SQU>$ L[]CASE GAMMA EQUALS "O M9US COS9E SQU>$ L[]CASE GAMMA IS WRITT5 _% SIN^2 .G .K #1-COS^2 .G _: #B