Two Louisiana students have found a proof to a theorem that has shaken the foundations of mathematics.
Two teenage girls have cracked a mathematical code that has stood for thousands of years: Ne’Kiya Jackson and Calcea Johnson, ...
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Using the sine and cosine rules to find a side or angle in a triangle
The trigonometric ratios sine, cosine and tangent are used to calculate angles and sides in right angled triangles. We are now going to extend trigonometry beyond right angled triangles and use it ...
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Trigonometric skills
Sine, cosine and tangent all have different positive or negative values depending on what quadrant they are in. Calculating the area of a triangle using trigonometry Trigonometry can be used to ...
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Trigonometry on the Sphere
Most trigonometry students look at triangles on a flat surface. However, people from ancient astronomers to modern navigators calculated the arc lengths and angles of triangles on a sphere. They used ...