Question 17
In a triangle $ABC$, the angle $A\hat{BC}$ measures $20^\circ$ and the angle $A\hat{C}B$ measures $40^\circ$. Let $E$ be a dot about $BC$ such that $BE = BA$.
a. Shows that the triangle $CEA$ is isosceles.
b. Knowing that the angle bisector length $B\hat{A}C$ is $2$, determine $BC - AB$.
a. Shows that the triangle $CEA$ is isosceles.
b. Knowing that the angle bisector length $B\hat{A}C$ is $2$, determine $BC - AB$.