Important right triangles to remember

November 02, 2019

Isosceles (45 degrees) and equilateral (60 degrees) triangles with associated sine, cosine and tangent rations. 

These 2 triangles contain the sin cos and tan ratios for the commonly used angles of 30, 45 and 60 degrees. Often used in Paper 1 (non-calculator) questions, memorising these can be invaluable


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