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Re: An OCR attempt of the "Table de Point Miniature" article.
From: Tony Oz
Date: 2017 Mar 29, 01:59 -0700

Hello!

I'm trying to re-create the table contents by direct calculation of tabulated values. The "cos" and "tan" columns are obvious (page 190). But I can not find the formula to get the "delta" values, the given values are far too huge for the near-zero angles.

I try:

• Δ = cos(0°) - cos(0°1') = 0,000000042
• Δ = [cos(0° - cos(0°1')] / cos(0°1') =  0,000000042

How else could I interpret the "delta" definition as a cosine change for 1' ? The Doniol's table gives the "delta" == 0,1 for 0°. How comes?

Thank you in advance.

Regards,

Tony

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