Sine and Cosine Rule
On this page, we will look at the Sine Rule, the Cosine Rule and the formula for the Area of a Triangle. The formulae are fairly straightforward to use, but don't take this topic too lightly: some exam questions can be quite challenging. Questions on this topic can even come up on the non-calculator paper when we use the angles 30°, 45°, 60°, ... Key Concepts On this page, you should learn about Summary We can use...