30rad是多少°？
30rad = 1,718.873°
是1,718.873°，所以说成1,719°也没问题——四舍五入的误差在0.5%以内。
反过来，30°是多少rad？
30° = 0.524rad
计算公式: ° = rad × 57.29578
该数值前后的 rad → °
12 rad687.549°
14 rad802.141°
16 rad916.732°
18 rad1,031.324°
20 rad1,145.916°
22 rad1,260.507°
24 rad1,375.099°
26 rad1,489.69°
28 rad1,604.282°
30 rad1,718.873°
32 rad1,833.465°
34 rad1,948.057°
36 rad2,062.648°
38 rad2,177.24°
40 rad2,291.831°
42 rad2,406.423°
44 rad2,521.014°
46 rad2,635.606°
48 rad2,750.197°
50 rad2,864.789°