A treatise on surveying and navigation: uniting the theoretical, practical, and educational features of these subjects (1857)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst; Toledo, Anderson, Burr, & co. · leaf 19
ther in or without the circumference of the circle. When the given point is in the circum-ference, as A, draw AC the radius, andfrom the point A, draw AB perpendicularto A C; AB is the tangent required. Proof, (th. 4, b. 3). When A is without the circle, drawA C to the center of the circle ; and… … PROBLEM 13. On a given line, to describe a segment of a circle, that shall containan angle equal to a given angle. INTRODUCTION. 17 ^^-^p Let AB be the given line, and 0the given angle. At the ends of thegiven line, make angles DAB, DBA,each equal to the given angle, C.Then draw AE, j5i?,…
Surveying · Navigation
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