Introduce your child to mathematics with Mighty Math. This is a structured, easy-to-follow series of fun activities designed to stimulate and challenge. This is the first in a three book series ...
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General manual for sailing with corsair sailing boat
Circle Force by Ross Tayler and Fraser ParkerFull description
Circle Force by Ross Tayler and Fraser ParkerFull description
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Circle Force by Ross Tayler and Fraser Parker
Great Circle Sailing Formulas
DISTANCE
COS dist. = COS lat1 * COS lat2 * COS dlong + / ± SIN lat1 * SIN lat2 + If the course doesnt cross the equator, - if it does
INITIAL COURSE
COS course = {SIN lat2 ± (COS dist. * SIN lat1)} / (SIN dist. * COS lat1) If the two points are in two different hemispheres, the equation will start with a negative sign.
ABC CHECK A
= TAN lat1 / TAN dlong
B = TAN lat2 / SIN dlong TAN
AZ
= 1 / (COS lat1 * C)
FINAL COURSE
COS course = {SIN lat1 ± (COS dist. * SIN lat2)} / (SIN dist. * COS lat2) If the two points are in two different hemispheres, the equation will start with a negative sign.
VERTEX
COS Lat = COS lat1 * SIN initial course SIN dlong = COS initial course / SIN Lat
COURSE TO STEER AT EQUATOR Co-latitude of the vertexs latitude
LONGITUDE WHERE THE EQUATOR IS CROSSED 90° from the vertexs longitude
LATITUDE AT DIFFERENT MERIDIANS
TAN Lat = COS dlong * TAN latv Dlong
between the vertex and the longitude in the question
