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Law of Tangents

Equation

(a - b)/(a + b) = tan((α - β)/2)/tan((α + β)/2) | b | second side length a | first side length α | angle opposite first side β | angle opposite second side

Input values

first side length | 1 angle opposite first side | 60° (degrees) angle opposite second side | 60° (degrees)

Result

second side length | 1

Diagram

Diagram

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