Question

Find arc eahaving trouble with this, hope you can help

Answer 1

From the figure, we can see that the angles ∠CRB and ∠ERA are vertical angles. This means that they are congruent:

`\begin{gathered} ∠CRB\cong∠ERA \\ \\ \Rightarrow m∠ERA=50\degree \end{gathered}`

Finally, since this is a central angle, we conclude that:

`EA=50\degree`