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    				| 1. | Example 2.1 Calculate the angle of(a) 1° (degree) (b) 1' (minute of arc or arcmin)and (c) 1"(second of arc or arc second) inradians. Use 360°-2π rad, 10-60, and1' 60 | 
| Answer» We know 360°= 2π rad =>1°= (π/180) rad = 0.01745 rad 1`= (1/60)0= π/(60 × 180) = 0.00029 rad 1``= (1/3600)0= π/(3600 × 180) = 0.0000048 rad not understood | |