law of cosines - Wolfram|Alpha

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Assuming "law of cosines" refers to a formula | Use as referring to a mathematical definition instead
first side length (a):  
second side length (b):  
angle opposite third side (γ):  
diagram

Input interpretation:

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Equation:

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Result:

link to /input/?i=7.998&lk=1&a=ClashPrefs_*Math-link to /input/?i=1.011+radians&lk=1link to /input/?i=1.011+radians&lk=1link to /input/?i=57.92+degrees&lk=1link to /input/?i=57.92+degrees&lk=1link to /input/?i=812.9+milliradians&lk=1link to /input/?i=812.9+milliradians&lk=1link to /input/?i=46.58+degrees&lk=1link to /input/?i=46.58+degrees&lk=1
EnlargeEnable InteractivityDownload as CDF

Diagram:

link to /input/?i=75.5+degrees&lk=1link to /input/?i=75.5+degrees&lk=1
EnlargeEnable InteractivityDownload as CDF

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