Garrett Weber
08/02/2024 · Primary School
\( b ^ { 2 } = a ^ { 2 } + c ^ { 2 } - 2 a c \cos B \)
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The equation is a form of the Law of Cosines, which relates the sides and angles of a triangle. It is used to find the length of a side when the lengths of the other two sides and the included angle are known.
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