Assertion: conic projection's parallel | /r/HasProperty | colatitude c0
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Source sentences:
text: mathematically, this projection is also expressed as mappings from latitude and longitude to polar coordinates, but with the origin located at the apex of the cone formulas for equidistant conical projection with one standard parallel (j0 , colatitude c0) are: r = tan(c0) + tan(c - c0)