Bailey, Frederick H. (Frederick Harold), 1865- · Boston, London, Ginn & Co. · leaf 292
g its centre at 0,and is the point where the spherical surface is pierced by the above lineof intersection. (See Fig. 4.) <^ will vary from 0° to 180°, 0 from 0° to 360°, and r canhave all numerical values. If we wish to give r a negativevalue, we may do so as follows : As noted above, the… … 277 ^ Fig. 4. 3. Distance between Two Points Pi (xi, yi, Zj) and Pj (xj,I2, 22)- Z
Geometry, Analytic
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