---
angle: dimension
---

```calc
θ := 30 deg
θ = ? deg
asin(0.5) = ? deg
k_r := 20 kN*m/(0.01 rad) = ? MN*m/rad
x := 2 m + θ
```

```calc
r := 2 m
s := r*θ/rad = ?
f := 50 Hz
ω := 2*π*f*rad = ? rad/s
```