60° 120° 135° 150° 210° 30° is a reference angle for: 225° 240° 300° 315° 330° 30° 120° 135° 150° 210° 60° is a reference angle for: 225° 240° 300° 315° 330° 60° 120° 135° 150° 210° 45° is a reference angle for: 225° 240° 300° 315° 330° π/3 2π/3 3π/4 5π/6 7π/6 π/6 is a reference angle for: 5π/4 4π/3 5π/3 11π/6 7π/4 π/6 2π/3 3π/4 5π/6 7π/6 π/3 is a reference angle for: 5π/4 4π/3 5π/3 11π/6 7π/4 π/3 2π/3 3π/4 5π/6 7π/6 π/4 is a reference angle for: 5π/4 4π/3 5π/3 11π/6 7π/4 |