कोणीय आकार कैलकुलेटर — सूत्र
## Angular Size
The angular size (angular diameter) of an object as seen from a given distance.
### Small-Angle Approximation
**θ ≈ d / D** (radians)
where d = physical diameter, D = distance. Multiply by 180/π for degrees, then by 60 for arcminutes or 3600 for arcseconds.
The angular size (angular diameter) of an object as seen from a given distance.
### Small-Angle Approximation
**θ ≈ d / D** (radians)
where d = physical diameter, D = distance. Multiply by 180/π for degrees, then by 60 for arcminutes or 3600 for arcseconds.
हल किया गया उदाहरण
The Moon: diameter 3 474 km, distance 384 400 km.
- θ = 3474 / 384400 = 0.009038 rad
- Degrees: 0.009038 × 57.296 = 0.5178°
- Arcminutes: 0.5178 × 60 = 31.07'
- The Moon is about half a degree across.