# Tangent Graph

Tangent function is one of the six trigonometric functions. Tangent is abbreviated by tan. Tangent of an angle is described in the context of right triangle like other trigonometric functions. Let us suppose a right triangle as shown in the following figure:

Then, tangent of angle $\theta$ is described by the formula:

Few selected important values of tan $\theta$ are listed below in the table:

$\theta$ | tan $\theta$ |

0$^o$ | 0 |

30$^o$ |
$\frac{1}{\sqrt{3}}$ |

45$^o$ |
1 |

60$^o$ |
$\sqrt{3}$ |

90$^o$ |
$\infty$ |