,COS9E ,EXAMPLES

#A4 ,! COS9E ( #FJ DEGREES IS
  WRITT5 _% COS #60^.* _:
#B4 ,! COS9E ( OP5 FRAC;N ?REE
  PI OV] TWO CLOSE FRAC;N EQUALS
  Z]O IS WRITT5
  _% COS ?3.P/2# .K #0 _:
#C4 ,! COS9E ( ;X IS EQUAL TO
  OP5 FRAC;N "O OV] ! SECANT (
  ;X CLOSE FRAC;N IS WRITT5
  _% COS X .K ?1/SEC X# _:
#D4 ,COS9E SQU>$ !TA EQUALS "O
  M9US S9E SQU>$ !TA IS WRITT5
  _% COS^2 .? .K #1-SIN^2 .? _:









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