π/12 x 180/π = 180π/12π ÷ 12π/12π = 15° π/12 radians = 15°

Example 1: 1/3π radians = π/3 x 180/π = 180π/3π ÷ 3π/3π = 60° Example 2: 7/4π radians = 7π/4 x 180/π = 1260π/4π ÷ 4π/4π = 315° Example 3: 1/2π radians = π /2 x 180/π = 180π /2π ÷ 2π/2π = 90°