You might find the following videos helpful related to this section:
4F The Sine Rule (1 of 3)
Explains how to label a triangles vertices and edges and how this relates to the Sine Rule.
4F The Sine Rule (2 of 3)
Explains how to calculate the side on a non right-angled triangle using the sine rule.
4F The Sine Rule (3 of 3)
Explains how to calculate the size of angles on non-right angled triangles using the sine rule.
4G The Cosine Rule (1 of 3)
Explains how to label a non-right angled triangle and relates this to the Cosine Rule.
4G The Cosine Rule (2 of 3)
Completes an example where you calculate the length of a side using the Cosine Rule.
4G The Cosine Rule (3 of 3)
Completes an example where you calculate the size of an angle using the Cosine Rule.
4D Trigonometry and Obtuse Angles (1 of 3)
Explores what happens when you apply the sine, cosine and tangent function to supplementary angles.
4D Trigonometry and Obtuse Angles (2 of 3)
Completes examples where you must calculate the obtuse angle using inverse trigonometric functions.
4D Trigonometry and Obtuse Angles (3 of 3)
Completes examples where you must calculate the obtuse angle using inverse trigonometric functions.
4E Area of a Triangle (1 of 2)
Explains how to calculate the area of non-right angled triangles given the length of two sides and the included angle.
4E Area of a Triangle (2 of 2)
Explains how to calculate the area of non-right angled triangles given the length of two sides and the included angle.

There are broadly 2 types of questions you can expect in exam:
– 4.2.1 Exam Question Type 1
– 4.2.2 Exam Question Type 2
Study notes of this section and other resources can be accessed here:
– 4.2.3 Study Notes & Resources