4.4 Reference Angles by RHO
15°
Find the reference angle for -165°
π/3
Find the reference angle for -2π/3
2π/5
Find the reference angle for -3π/5
0
Find the reference angle for -π
π/7
Find the reference angle for -π/7
10°
Find the reference angle for 10°
1.056
Find the reference angle for 11.51
π/6
Find the reference angle for 11π/6
60°
Find the reference angle for 120°
45°
Find the reference angle for 135°
30°
Find the reference angle for 150°
20°
Find the reference angle for 200°
40°
Find the reference angle for 220°
70°
Find the reference angle for 250°
71°
Find the reference angle for 289°
0.558
Find the reference angle for 3.7
32°
Find the reference angle for 392°
π/2
Find the reference angle for 3π/2
π/4
Find the reference angle for 3π/4
45°
Find the reference angle for 495°
3π/7
Find the reference angle for 4π/7
2π/7
Find the reference angle for 5π/7
3π/8
Find the reference angle for 5π/8
75°
Find the reference angle for 75°
π/6
Find the reference angle for 7π/6
π/4
Find the reference angle for π/4