Trigonometric functions are elementary functions. They have inherent periodicity, that is, repeatability on certain segments of the coordinate plane. The period is denoted by the letter T.
Trigonometric functions include:
function of sine: y = sin(x), the graph of which is sine wave
![](https://meowgen.com/wp-content/uploads/2022/08/sinx.png)
- the cosine function y = cos(x), the graph of which is a cosinusoid
![](https://meowgen.com/wp-content/uploads/2022/08/cosx.png)
- function of the tangent y = tg(x), for graph y=tan(x) the graph of which is the tangensoid
![](https://meowgen.com/wp-content/uploads/2022/08/tanx.png)
- the function of cotangent y = ctg(x) for graph y=cot(x) whose graph is the cotangensoid.
![](https://meowgen.com/wp-content/uploads/2022/08/cotx.png)
All graphics are built with our graphical calculator
Sinus and cosine graphs are curved lines along the X axis.
Tangent and cotangent graphs are many curved lines along the Y axis.
Plot a graph of the trigonometric function online
Example trigonometry function graph: