How do you know whether to use the sine or cosine rule?
Often, the question we are given can only be solved by using either the sine or cosine rule, not both. The following videos go through how to know which formula to use in HSC Standard Math and further examples with the sine and cosine rule.
Examples
The following videos are examples of how to solve trigonometric problems using the sine or cosine rule.
Part 1
Part 2