,L[]CASE ,!TA ,EXAMPLES #1_4 ,!TA EQUALS OP5 FRAC;N PI OV] #6 CLOSE FRAC;N IS WRITT5 .? .K ?.P/6# #2_4 ,! COTANG5T ( !TA EQUALS OP5 FRAC;N COS9E ( !TA OV] ! S9E ( !TA CLOSE FRAC;N IS WRITT5 COT .? .K ?COS .?/SIN .?# #3_4 ,! COSECANT ( OP5 P>5!SIS PI M9US !TA CLOSE P>5!SIS EQUALS ! COSECANT ( !TA IS WRITT5 CSC (.P-.?) .K CSC .? #4_4 ,! COS9E ( TWO !TA EQUALS COS9E SQU>$ !TA M9US S9E SQU>$ !TA IS WRITT5 COS #2.? .K COS^2 .?-SIN^2 .? #5_4 ,! S9E ( OP5 P>5!SIS NEGATIVE !TA CLOSE P>5!SIS EQUALS NEGATIVE S9E !TA IS WRITT5 SIN (-.?) .K -SIN .? #6_4 ,S9 SQU>$ !TA PLUS COS9E SQU>$ !TA EQUALS "O IS WRITT5 SIN^2 .?+COS^2 .? .K #1 #A