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Trigonometric Ratios


Videos and lessons with examples and solutions to help GCSE/IGCSE Maths students learn about the trigonometric ratios: sine, cosine and tangent.




 
Trigonometry - Right Angled Triangles - Naming the Sides
In this tutorial you are shown how to name the sides of any right angled triangle which is the first stage in solving a question in trigonometry.
Trigonometry - The Trig Ratios
In this tutorial you are shown how the sin, cos and tan ratios compare two sides of a right angled triangle. You need to know this before calculating lengths and angles of right angled triangles.



Trigonometric Ratios

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