,TRIGONOMETRIC ,FUNC;NS ,SAMPLES #A4 ,! COSECANT ( NEGATIVE ?IRTY DEGREES IS EQUAL TO NEGATIVE TWO IS WRITT5 _% CSC (-30^.*") .K -#2 _: #B4 ,! TANG5T ( OP5 FRAC;N ?REE PI OV] F\R CLOSE FRAC;N EQUALS NEGATIVE "O IS WRITT5 _% TAN ?3.P/4# .K -#1 _: #C4 ,! COTANG5T ( ;X EQUALS OP5 FRAC;N COS9E ( ;X OV] S9E ( ;X CLOSE FRAC;N IS WRITT5 _% COT X .K ?COS X/SIN X# _: #D4 ,SECANT SQU>$ !TA M9US #A EQUALS TANG5T SQU>$ !TA IS WRITT5 _% SEC^2 (.?)-1 .K TAN^2 .? _: #A