 | Frank Moore Colby, Talcott Williams - Education - 1922 - 922 pages
...• and two opposite parts, as co-A, c. The rules of Napier connect these by the following mnemonic: The sine of the middle part equals the product of the tangents of the adjacent parts, and the sine of the middle part equals the product of the cosines of the opposite parts. CnPCULAT'ING... | |
 | David Adamy - Electronics in military engineering - 252 pages
...changed to the cofunction in Napier's rules (eg, sine becomes cosine). Napier's rules are as follows: • The sine of the middle part equals the product of the tangents of the adjacent parts. (Remember the "co-"s.) • The sine of the middle part equals the product of the cosines of... | |
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The sine of the middle part equals the product of the tangents of the adjacent parts. 
