Archive image from page 270 of Deep borehole surveys and problems. Deep borehole surveys and problems deepboreholesurv00hadd Year: 1931 Angle sin- PROBLEMS Ad sin i 259 c Vl - cos2 i cos d Referring to figures: Case 1.—Here it will be seen by Figs. 172 and 173 that b a + therefore 5 = sin 5i 4- sin i /gyx Vl — cos i cos B Case 2.—Here the full dip is obtained by 5 = /3 — a (Case 2, Plate XV) DIPPERS Case 2. <f- ff-oc

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