Maths - triangles
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Last updated 10:50 AM on 1/28/25
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5 Terms
1
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Pythagoras
a² + b² = c²
2
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Sine rule
A / sin(a) = B / sin(b)
3
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Cosine rule for a side
a² = b² + c² - 2bc cos(A)
4
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Cosine rule for an angle
Cos(A) = b² + c² - a² / 2bc
5
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Area from a triangle
Area = ½ ab sin(C)
