שינויים

*<math>\sin(x)=\sum_{n=0}^\infty \frac{(-1)^n}{(2n+1)!} x^{2n+1} = x-\frac{x^3}{3!}+\frac{x^5}{5!}-\frac{x^7}{7!}+...</math>

*<math>\cos(x)=\sum_{n=0}^\infty \frac{(-1)^n}{(2n)!} x^{2n} = 1-\frac{x^2}{2!}+\frac{x^4}{4!}-\frac{x^6}{6!}+...</math>