Function applySolarArc

applySolarArc(natalLongitude: number, solarArc: number): number
Apply solar arc to a single natal longitude.
Parameters
- natalLongitude: number
  Natal longitude in degrees (0-360)
- solarArc: number
  Solar arc in degrees
Returns number
Directed longitude in degrees (0-360)
Example
```
// Natal Mars at 100°, solar arc of 30°
const directedMars = applySolarArc(100, 30);
console.log(directedMars); // 130°
```
- Defined in progressions/solar-arc.ts:139