cosine theorem

 

a , b , c blue    -  sides of a scalene triangle

alpha red1 , beta green , Y blue    - opposite angles

 

 

Formulas of law of cosines :

cosine theorem F a     

cosine theorem F b     

cosine theorem F c     



 

 

sine theorem

 

a , b , c blue    -  sides of an scalene triangle

alpha red1 , beta green , Y blue    - opposite angles

 

 

Formulas of law of sines :

sine theorem F     



 

 

Pythagorean theorem

 

a , b   -  legs of a right triangle

c blue  - hypotenuse    

 

 

The Pythagorean Theorem (formula) :

Pythagorean theorem F