Revise trigonometric ratios of sine, cosine and tangent and calculate angles in right-angled triangles with this Bitesize GCSE Maths Edexcel guide. ... (\cos{y} = 0.8327898 \dotsc\).

Learn and revise trigonometric ratios of sine, cosine and tangent and calculate angles and lengths in right-angled triangles with GCSE Bitesize AQA Maths.

We want the slope, but all we have is the angle. What we need is a relationship that relates the two. This relationship is known as the “tangent function,” written as tan(x).The tangent of an ...

Click in cell A2 and type "0". ... Use a mathematical reference to look up the formula for the secant function, which is the inverse of the cosine of an angle (see link in Resources).