A treatise on surveying ; in which the theory and practice are fully explained (1860)
Alsop, Samuel · Philadelphia, E. C. & J. Biddle & co. · leaf 49
Fig. 32. 109. The complement of an arc orangle is what it differs from a quad-rant, or 90°. Thus, DB (Fig. 32) isthe complement of AB, and MD ofAM. … HO. The supplement of an arc or angle is what it wantsof 180°. Thus, BE (Fig. 32) is the supplement of AB, andME of AM. 1U. Trigonometrical Functions. The trigonometri-cal functions are lines having definite geometrical relationsto the arc to which they belcng. Those most in use arethe sine, the…
Surveying
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