GCSE Eduqas Trigonometry - Eduqas Angles of elevation and depression The three trigonometric ratios; sine, cosine and tangent are used to calculate angles and lengths in right-angled triangles.

Revise trigonometric ratios of sine, cosine and tangent and calculate angles in right-angled triangles with this Bitesize GCSE Maths Edexcel guide.

If there is any truth in the theory which ascribes elevation and depression to the denudation of rock from one area and its accumulation upon another, the introduction of such an immense weight of ...