What is the cosine rule?
The cosine rule relates the sides and angles in a triangle. This post will explain the cosine rule in HSC Standard Math by going through the following:
- What is the cosine rule formula?
- How to use the cosine rule to calculate the SIDE of a triangle
- How to use the cosine rule to calculate the ANGLE of a triangle
What is the cosine rule formula
The following videos explain the cosine rule formula.
How do you use the cosine rule to calculate the SIDE of the triangle
The following video explains how to calculate the side of a triangle using the cosine rule.
How do you use the cosine rule to calculate the ANGLE of the triangle
The following video explains how to calculate the angle of a triangle using the cosine rule.
