$\sin(v)

\sin(180^\circ-v)

= S i n u s v \overset{a}{¨} r d e t f \overset{o}{¨} r e n v i n k e l

v

\overset{a}{¨} r l i k a m e d [[R u l e s : S i n M i r r o r ∣ s i n u s v \overset{a}{¨} r d e t f \overset{o}{¨} r v i n k e l n

180^\circ-v

]] . D \overset{a}{¨} r f \overset{o}{¨} r k a n m a n e x e m p e l v i s f \overset{o}{¨} r e n k l a u t t r y c k e t

2\sin(180^\circ-A)

t i l l

2\sin(A).$