Spherical Trigonometry: With Naval and Military Applications

altitude angular apply Napier's rules astronomical triangle azimuth B₁ bearing C₁ c₂ celestial equator celestial sphere colog cologarithm computed D.R. position decimal declination diameter draw earth equator Example figure Find the course find the distance Find the latitude following spherical triangles formulas given great-circle distance great-circle track Greenwich Hence hour angle included angle initial course intersection knots on course L₁ latitude latitude and longitude law of cosines law of sines lay off arc line of position logarithms longitude M₁ M₂ mantissa meridian mils nautical miles observer obtain perpendicular polar triangle primitive circle primitive plane quadrant R₁ radians radius range finder represents rhumb line right ascension right spherical triangle sidereal sides sin b sin Solution Solve the following star steaming stereographic projection subtends sunrise trigonometry true length values vector velocity Vs/g