SANTOS, L. C. P.; http://lattes.cnpq.br/2880039345540652; PEREIRA, Luana Cristina Santos.
Résumé:
In this work we present a bit of history, emphasizing the main moments
and the mathematicians who took part in the study of Trigonometric Functions. Like
motivation, we present the functions sine and cosine defined for the acute angles and the
Euler's function. We will show the importance of applications of trigonometric functions.
because through it we can model the periodic phenomena that happen in our
day to day. For example, the phenomenon of tides that are periodic variations of the
sea level due mainly to the gravitational pull of the Moon. Another example is the
cardiac cycle which is one of the phenomena that periodically repeats in our body.