Nystrom, John W. (John William), 1824-1885 · Philadelphia, J.B. Lippincott · leaf 157
sin.fz+v) a sin.tA sm.w; sin.w x.&m.z, . r _ x V = —.—5- (a sin.[2+flJ + a sm.v).* sm.W »- j / This is the general formula for all conic sections. In any conic section, a point P can be calculated by this formula 6, but forthe different sections, it will be found greatly simplified on thenext… … 147. Circle. y = V ra — 5% # = Vr*1 —/,
Mechanical engineering · Engineering
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