Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 384
zenithdistance, as one side ofthe triangle. The sec-ond side ZP is the com-plement of NP, whichis the observers lati-tude. Finally, sinceAS is the declinationof the sun (given in thealmanac) the third sidePS is the complementof the declination. We, therefore, know the three sides of thespherical… … Determination of Time by the Suns Altitude. sin J P = Jrin*r«+(«-»)1ain*r»-(»-8n,V cos <j> cos 8 in which z is the suns zenith distance, 8 its declination, and <f> thelatitude of the observer. We may add that the angle PZS is thesuns azimuth at the time of the observation. The third…
Astronomy · Constellations
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