Newcomb, Simon, 1835-1909 · New York, H. Holt and company · leaf 355
V^ P^P^P^<^ Si^x 0( ^JUy<5 AP ^ 8V^- ^^c^(,^^ ^OA 03 OP oP ^ z. K JX Xt^O<> Ax _ AI^ . BP 7<^ … ANHARMONIC RATIO. 327 and the line Fwill give the sine-ratio sin APYsin BPY The quotient of these ratios, or sin APX . sin APY _ sin .^PX sin BPYsin BPX sin BPY ~ sin BPX sin APY is called the anharmouic ratio of the pencil of lines PA,PB,PXaiidPY. Designating each line by a single letter, we may…
Geometry, Analytic
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