15+ How To Find The Radians New. One full rotation around a circle is equal to 360°. The radian formula can be written as, 2π radians = 360° from this, 1 radian = 360°/2π (or) 1 radian = 180°/π. Question Video Finding the Central Angle in Radians and Perimeter of from www.nagwa.com Where θ is …