A complete and practical solution book for the common school teacher (1899)
Fairchild, J[ohn] T[heodore] [from old catalog] · Crawfis College, Ohio, The author · leaf 205
|R/-sin0.(6) Then we have 7tR2(7T—20) . Trr 4Rrsin0 = rR2 20 (7) But r=2Rcos0. … 190 FAIRCHILDS SOLUTION BOOK. (8) Substituting the value of r, we have *-R2(ir—20)4- 47r0R2Cos20-^R2sin20=1VrR2» or sin20—20cos20=TVr. (9) Solving this equation by the method of double position, we find p=76°2145f.(10) BP=2rcosp= 10.6418 rd., the length of the line. PROBLEM 385. Find the area of…
Arithmetic · Geometry
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