Now it is only one way to go – forward! You can do it!
In Sharepoint there is a new folder in the folder ”revision exercises”. It is called ”After mock”. There you can find Paper 1 and Paper 2, solutions and new revision exercises. The sooner you can start to revise the better.
Pythagoras Theorem can only be applied on right angled triangles, and only to find length of a side.
”SOH CAH TOA” can only be applied on right angled triangles, and involves relations between angles and length of sides.
Sine rule and Cosine rule are applied on non-right angled triangles.
Use Sine rule, when given:
– Two angles and one side (to find length of another side). (If you know two angles, you also know the third…)
– Two sides and a non-included angle (to find the size of another angle).
Use Cosine rule when given:
– Two sides and an included angle (to find the length of the third side).
– Three sides (to find the size of an angle).