Tilbake til formelsamling
a 2 + b 2 = c 2 {\displaystyle a^{2}+b^{2}=c^{2}\,}
s i n v = m o t s t a e n d e k a t e t h y p o t e n u s = a c {\displaystyle sinv={\frac {motstaendekatet}{hypotenus}}={\frac {a}{c}}}
c o s v = h o s l i g g e n d e k a t e t h y p o t e n u s = b c {\displaystyle cosv={\frac {hosliggendekatet}{hypotenus}}={\frac {b}{c}}}
t a n v = m o t s t a e n d e k a t e t h o s l i g g e n d e k a t e t = a b {\displaystyle tanv={\frac {motstaendekatet}{hosliggendekatet}}={\frac {a}{b}}}
S i n A a = S i n B b = S i n C c {\displaystyle {\frac {SinA}{a}}={\frac {SinB}{b}}={\frac {SinC}{c}}}
a 2 = b 2 + c 2 − 2 × b × c × c o s A {\displaystyle a^{2}=b^{2}+c^{2}-2\times b\times c\times cosA}
A r e a l = 1 2 × b × c × s i n A {\displaystyle Areal={\frac {1}{2}}\times b\times c\times sinA}
