Question 14
In a triangle $ABC$ we have points $D$ and $E$ respectively on $AB$ and $AC$. We know the measurement of the angles indicated below: $\widehat{ABE}=30^\circ$, $\widehat{EBC}=50^\circ$, $\widehat{ACD}=20^\circ$ and $\widehat{DCB}=60^\circ$. Find the value of the angle $\widehat{EDC}$.