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Trigonometry

Also refer to Maths notes

Background knowledgeDescription
Pythagorus theoremThe Pythagorus theorem is explained and the truth of the theorem is proved.
TrigonometryDescription
An introduction to trigonometryWhat is trigonometry?  Why is it useful?   These questions are answered and the characteristics of triangles that make trigonometry possible are explained.
Names of trigonometry ratiosThe names of the main ratios in trigonometry are introduced.
Values of trigonometry ratiosHow the values of the ratios change as the angles change.
GeoGebra interactive toolsDescription
Exploring trigonometryExploring the features of trigonometry.  (Work in progress)
Intro to angles in the 4 quadrantsExploring how the ratios change as the angles increase or decrease.