A Complete Key to Gummere's Surveying: In which the Operations of All the Examples, Not Solved in that Work, are Exhibited at Large Principally Designed to Facilitate the Labor of Teachers and to Assist Those who Have Not the Opportunity of Their Instruction
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ABCD angles and side BC+AC bearing 32 bearing and distance Benjamin Hallowell bisect C.sin Calculation CD CM centre Changed Bearing CM rH Construction Demonstration departure diff Dist division line draw equal Euclid Example find AC find CD find log find the angle fourth term given area given bearings given side GUMMERE'S SURVEYING Half sum Remainders Hence i-h CM join KEY TO GUMMERE'S KIMBER & SHARPLESS Mult parallel Precip'itate PROBLEM 12 protract the figure PUBLISHED BY KIMBER Question radius rectangle rH rH secant bearing secant of bearing similar triangles spelling SPELLING-BOOK square tang triangle ABC TRIGONOMETRY