Assertion: latitude | /r/HasProperty | 30°
Facets:
Source sentences:
text: at latitude 30° the scale factor is k = sec 30° = 1.15, at latitude 45° the scale factor is k = sec 45° = 1.41, at latitude 60° the scale factor is k = sec 60° = 2, at latitude 80° the scale factor is k = sec 80° = 5.76, at latitude 85° the scale factor is k = sec 85°