Introduction to the Cosine Rule for Finding Missing Lengths and Angles in Triangles

The video tutorial covers the use of trigonometry in solving problems involving triangles. It begins with an introduction to SohCahToa for right angle triangles and transitions to the cosine rule for non-right angle triangles. The cosine rule is explained in detail, including its derivation and application in finding missing side lengths and angles. The tutorial concludes with practical examples demonstrating how to apply the cosine rule in various scenarios.

What is the cosine rule and when is it used?

Explain how to rearrange the cosine rule to find a missing angle.

Describe the relationship between the sides and angles in a triangle according to the cosine rule.

How do you derive the cosine rule from a triangle?

What steps would you take to use the cosine rule to find a missing side length?

How can you apply the cosine rule to solve real-world problems?

What is the significance of labeling angles and sides in the cosine rule?