A directory of useful objects found on the web for teaching Maths.
Browsing by The Australian Curriculum
Apply trigonometry to solve right-angled triangle problems (ACMMG224)
* understanding the terms 'adjacent' and 'opposite' sides in a right-angled triangle
* selecting and accurately using the correct trigonometric ratio to find unknown sides (adjacent, opposite and hypotenuse) and angles in right-angled triangles