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Triangle angles for given triangle sides

This calculator computes triangle angles for given triangle sides using cosine law

This page exists due to the efforts of the following people:

Timur

Timur

Michele

Michele

A

Anton

Created: 2011-07-29 21:39:04, Last updated: 2020-11-10 15:37:27

triangle.JPG



This calculator computes triangle angles for given triangle sides using cosine law.

Cosine law:
c^2=a^2+b^2-2ab cos \gamma,
thus
\gamma = arccos( \frac{a^2+b^2-c^2}{2ab} )

For degenerate triangle, where side lengths violate,
a+b>c,
b+c>a,
a+c>b,

the results will be zeroes.

PLANETCALC, Triangle angles for given triangle sides

Triangle angles for given triangle sides

Digits after the decimal point: 2
Angle alpha (degrees)
 
Angle beta (degrees)
 
Angle gamma (degrees)
 

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Timur2020-11-10 15:37:27

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