SOLUTION
A coterminal angle is an angle that points to an exact direction like the original angle.
Since a complete circle is 360 degrees.
The positive coterminal angle will be
Hence the positive coterminal angle is 526°
Then the negative coterminal angle will be
hence the negative coterminal angle will be -194°
The positive and negative coterminal angle to 166° are 526°, -194°
Therefore the right option is 1(A)