begin array c c text Age in years amp 13 amp 14... - JAMB Mathematics 1995 Question

(\begin{array}{c|c} \text{Age in years} & 13 & 14 & 15 & 16 & 17 \ \hline \text{No. of students} & 3 & 10 & 30 & 42 & 15\end{array})

The frequency distribution above shows the ages of students in a secondary school. In a pie chart constructed to represent the data, the angles corresponding to the 15 years old is