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P2 Topic 4: Trigonometry
Double angle formulae backmore
The interactive displays below will show you how some of the important trigonometrical identites are obtained.
Look at the status bar at the bottom to see a description of each step.

webEQ interactive equations This page uses WebEQ. To speed up downloading you can install this WebEQ Math Viewer . Click on the Math Viewer icon and you will be taken to the download site. webeq viewer