Respuesta :
Answer:
Option 1 is correct.
Step-by-step explanation:
Given angle [tex]\frac{11\pi}{18}[/tex]. we have to find the quadrant and the reference angle.
Angle given is [tex]\frac{11\pi}{18} i.e \frac{11}{18}\times 180^{\circ}=110^{\circ}[/tex]
Hence, the angle is 110° lies in second quadrant.
Now reference angle, the smallest angle that you can make from the terminal side of an angle with x-axis.
which is [tex]\pi-\frac{11\pi}{18}=\frac{7\pi}{18}[/tex]
Hence, option 1 is correct.
