Question

I need to know what b is in this question

Answer 1

From the consequence of intersecting secant theorem, we have that

$62^{0\text{ }}=\frac{1}{2}(b+80)$$62^0\text{ x 2 }=\text{ b +}80$$\begin{gathered} 124\text{ = b+80} \\ b\text{ = 124 -80} \\ b=44^0 \end{gathered}$

Hence, b = 44°