The Cosine Rule
I did the Sine Rule ages ago but never got around to doing cosine rule stuff. I think because the Mathspad activities are so good!
I didn’t go much into labelling the sides (which maybe I need to in future) or putting it all together. I think I’m going to do a resource called ‘Trigonometry : Putting it all together’ where several rules are used. Maybe with some exam questions and a bit of goal free stuff.
No posts for the next two weeks. I’m off on holiday.