BBC2 年
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 ...
BBC4 年
Using the sine and cosine rules to find a side or angle in a triangle
Use this formula when given the sizes of two sides and its included angle.