Willson, Robert Wheeler, 1853-1922 · Boston, New York Ginn & company · leaf 137
rth and southpoints. By means of this amplitudes maybe directly measured. The amplitude ofthe sun in this case was E. 31° N. Example 17. At Cambridge, September 10,in the afternoon, the suns altitude is 20°.What is its azimuth ? For the solution of this problem the alti-tude arc must be applied to… … Fig. 62. Sunrise June 21:Suns Bearing N. 59° B.;Az. 239° EXAMPLES OE THE USE OF THE GLOBE 125
Astronomy
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