Angle is a measure of rotation between two intersecting lines or surfaces. It is measured in degrees (°) or radians (rad).
1 TEC = 486,000 arcsec 
1 arcsec = 2.0576e-6 TEC 
उदाहरण: 
कन्वर्ट 15 Three Eighth Circle से Second of Arc:
15 TEC = 7,290,000 arcsec 
| Three Eighth Circle | Second of Arc | 
|---|---|
| 0.01 TEC | 4,860 arcsec | 
| 0.1 TEC | 48,600 arcsec | 
| 1 TEC | 486,000 arcsec | 
| 2 TEC | 972,000 arcsec | 
| 3 TEC | 1,458,000 arcsec | 
| 5 TEC | 2,430,000 arcsec | 
| 10 TEC | 4,860,000 arcsec | 
| 20 TEC | 9,720,000 arcsec | 
| 30 TEC | 14,580,000 arcsec | 
| 40 TEC | 19,440,000 arcsec | 
| 50 TEC | 24,300,000 arcsec | 
| 60 TEC | 29,160,000 arcsec | 
| 70 TEC | 34,020,000 arcsec | 
| 80 TEC | 38,880,000 arcsec | 
| 90 TEC | 43,740,000 arcsec | 
| 100 TEC | 48,600,000 arcsec | 
| 250 TEC | 121,500,000 arcsec | 
| 500 TEC | 243,000,000 arcsec | 
| 750 TEC | 364,500,000 arcsec | 
| 1000 TEC | 486,000,000 arcsec | 
| 10000 TEC | 4,860,000,000 arcsec | 
| 100000 TEC | 48,600,000,000 arcsec |