Documents © T Madas. The Cosine Rule © T Madas A B C a b c a2a2 = b2b2 + c2c2 – 2 b ccosA b2b2 = a2a2 +...

© T Madas © T Madas © T Madas The Cosine Rule © T Madas © T Madas A B C a b c a2 = b2 + c2 – 2 b c cosA b2 = a2 + c2 – 2 a c cosB c2 = a2 + b2 – 2 a b cosC The…