,COS9E ,EXAMPLES

#1_4 ,! COS9E ( #60 DEGREES IS
  WRITT5 COS #60^.*
#2_4 ,! COS9E ( OP5 FRAC;N ?REE
  PI OV] TWO CLOSE FRAC;N EQUALS
  Z]O IS WRITT5
  COS ?3.P/2# .K #0
#3_4 ,! COS9E ( ;X IS EQUAL 6OP5
  FRAC;N "O OV] ! SECANT ( ;X
  CLOSE FRAC;N IS WRITT5
  COS X .K ?1/SEC X#
#4_4 ,COS9E SQU>$ !TA EQUALS "O
  M9US S9E SQU>$ !TA IS WRITT5
  COS^2 .? .K #1-SIN^2 .?









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