ângulo em graus         4.5000E+01
ângulo em radianos      7.8540E-01
número de termos     15
 termo        valor
   1    1.000000000000000E+00
   2   -3.084251375340424E-01
   3    1.585434424381550E-02
   4   -3.259918869273900E-04
   5    3.590860448591509E-06
   6   -2.461136950494199E-08
   7    1.150115912797405E-10
   8   -2.657090677429008E-11
   9    1.045922216115876E-11
  10    1.439236477009946E-11
  11   -3.794350900976929E-12
  12    9.412658754925833E-12
  13   -3.911339553156569E-12
  14    1.009845051269508E-12
  15   -8.394269919575278E-13
cosseno de x          7.071067811865476E-01
cosseno aproximado    7.071067811870945E-01