Emerson, William, 1701-1782 · London : Printed for J. Nourse · leaf 217
P-A\ … /^^ Sea. II. OF THE SPHERE. 2^ By the Scale, Fig. Thro P and C draw DE ; apply CP to the femi- 3^*tangents, and let the tangent of its complementfrom C to I (or the fecant from P to I) On DIered the perpendicular IQ^ Find the center N ofFPR, and make the angle NPL zz angle given,and L is the…
Mechanical engineering
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