Original post by zed963
I'm just wondering, are we supposed to know the proofs for the edexcel c2 exam?
Perhaps you could clarify what proofs you are asking about
Original post by TenOfThem
Perhaps you could clarify what proofs you are asking about
sine rule and cosine rule
Original post by zed963
sine rule and cosine rule
No
Original post by zed963
sine rule and cosine rule
Not required at all, but I prefer to learn them to understand what is going on.
Just drop a perpendicular line from the top and they shouldn't be too difficult to derive on the spot (well, sine rule anyway. Cosine is a bit more complex.)
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