# Trigonometric ratios review

Review all six trigonometric ratios: sine, cosine, tangent, cotangent, secant, & cosecant.

## What are the trigonometric ratios?

$\large\sin(\angle A)=$ | $\large\dfrac{\blueD{\text{opposite}}}{\goldD{\text{hypotenuse}}}$ | |

$\large\cos(\angle A)=$ | $\large\dfrac{\purpleC{\text{adjacent}}}{\goldD{\text{hypotenuse}}}$ | |

$\large\tan(\angle A)=$ | $\large\dfrac{\blueD{\text{opposite}}}{\purpleC{\text{adjacent}}}$ | |

$\large\cot(\angle A)=$ | $\large\dfrac{\purpleC{\text{adjacent}}}{\blueD{\text{opposite}}}$ | |

$\large\sec(\angle A)=$ | $\large\dfrac{\goldD{\text{hypotenuse}}}{\purpleC{\text{adjacent}}}$ | |

$\large\csc(\angle A)=$ | $\large\dfrac{\goldD{\text{hypotenuse}}}{\blueD{\text{opposite}}}$ |

*Want to learn more about sine, cosine, and tangent? Check out this video.*

*Want to learn more about cotangent, secant, and cosecant? Check out this article.*

## Practice set 1: sine, cosine, and tangent

*Want to try more problems like this? Check out this exercise.*

## Practice set 2: cotangent, secant, and cosecant

*Want to try more problems like this? Check out this exercise.*