The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 29
lO ASTRONOMY. … said to be complements of each other. ZE and ES inFig. 12 are together equal to 90° : hence they are comple-inents of each other. ZE is equal to the latitude of the place, and E S is the eleva-tiofi of the equinoctial abovethe horizon : hence the ele-vation of the equinoctial isequal to the…
Astronomy
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