Students use trigonometric ratios to solve problems involving right-angled triangles. (Year 9, Mathematics, Australian Curriculum).This short unit of resources teaches the key information required to apply the trigonometry ratios to solve problems involving right-angled triangles. The key lessons included: - Trigonometry Pre-Learning (theta, side labels, identifying trigonometry ratios)- Trigonometry (Unknown Side-Lengths)- Trigonometry (Unknown Angles)This unit will provide students with the ba