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 ...

Use cosine, sine and tan to calculate angles and sides of right-angled triangles in a range of contexts.

The new Calculator in Windows 11/10 is elegant and feature-rich. Learn how to use it in the Standard, Scientific, Programmer and Conversion modes.