Note 69 — PART II. MOTION OF COMETS THROUGH THE SYSTEM.
Reading edition
This algebraical expression for M may be modified, so as to afford another method of computation, by which the correctness of the calculations may be proved. In the above expression, let both the numerator and denominator be divided by sin (L′ - λ′): it then becomes ; now, calling , we get . This is the expression given by De Lambre.