Given the secant above
[tex]\begin{gathered} c\text{ =}\frac{a-b}{2} \\ From\text{ the question} \\ c=20^O \\ b\text{ = mLN} \\ a=96^o \end{gathered}[/tex]
Substituting all these into the equation yields
[tex]\begin{gathered} 20\text{ =}\frac{96\text{ - mLN}}{2} \\ 40\text{ = 96 - mLN} \\ \text{mLN = 96 - 40} \\ mLN=56^o^{} \end{gathered}[/tex]
mLN = 56 Degrees, thus the correct answer is option H
