# Introductory trigonometry

This module from the AMSI 'The Improving Mathematics Education in Schools (TIMES) project' is for teachers who wish to consolidate their content knowledge on the topic of trigonometry. There are sections that provide history and context for the topic, as well as exercises and examples of how to present and explain the concepts to students.

Year level(s) Year 9, Year 10
Purpose Content knowledge
Keywords Trigonometry, ratio, sine, cosine, tangent, explicit teaching

## Curriculum alignment

Strand and focus Space
Topics Pythagoras and trigonometry
AC: Mathematics (V9.0) content descriptions
AC9M9SP02
Apply the enlargement transformation to shapes and objects using dynamic geometry software as appropriate; identify and explain aspects that remain the same and those that change

AC9M9M03

Solve spatial problems, applying angle properties, scale, similarity, Pythagoras' theorem and trigonometry in right-angled triangles

AC9M10M03

Solve practical problems applying Pythagoras' theorem and trigonometry of right-angled triangles, including problems involving direction and angles of elevation and depression

Numeracy progression Understanding geometric properties (P7)
Proportional thinking (P7)
Understanding units of measurement (P10)