https://snag.gy/0HBJIr.jpg
\(\frac{10π}{5}= 2π \) so for >10π we start from 0 again.The same and with -10π
So \(-\frac{16π}{5}= -\frac{10π}{5}-\frac{6π}{5}= -2π - \frac{6π}{5} = -\frac{6π}{5} \)
Correct answer is \(-\frac{16π}{5}\)
Hope this helps!