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Year 10 Interactive Maths - Second Edition

Chapter 15 Trigonometry

Trigonometry is a branch of mathematics that is used to solve problems involving distances and angles. It has wide applications in navigation, surveying, astronomy and engineering. Trigonometry is also used in the study of periodic events such as the tides of the ocean. Toolmakers, fitters and many others need to be familiar with trigonometry and be able to calculate an angle or side-length of a triangle.

Naming the Sides of a Right-Angled Triangle
Finding Side-Lengths
Using the Cosine Ratio
Using the Tangent Ratio
Using a Graphics Calculator
Finding Angles
Using Inverse Cosine
Using Inverse Tangent
Problem Solving
Composite Figures
Directions and Bearings
Angles of Elevation and Depression
Three-Dimensional Problems
Problem Solving Unit
Projects
Symbols
Index

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