### Introduction

This Section describes ways in which trigonometric functions can be used to model situations involving periodic motion, which occur in a wide variety of scientific and engineering situations, and in nature.

#### Prerequisites

- be competent at algebraic manipulation
- be familiar with trigonometric functions

#### Learning Outcomes

- use trigonometric functions to model periodic motion
- define terms associated with the description of periodic motion

#### Contents

1 Oscillating functions: amplitude, period and frequency2 Oscillating functions: modelling tides