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   Message 4,802 of 5,127   
   Lawrence D'Oliveiro to Steven G. Kargl   
   Re: Angle Units For Trig Functions   
   24 Oct 24 05:22:53   
   
   From: ldo@nz.invalid   
      
   On Thu, 24 Oct 2024 05:06:37 -0000 (UTC), Steven G. Kargl wrote:   
      
   > For sin(x), argument reduction will give sin(0) = 0, exactly. That's one   
   > angle.   
      
   More generally, it gives sin(x) ≃ x, for uncountably many angles.   
      
   > For sind(x), argument reduction will give sind(x) = 0, exactly,   
   > for countable many angles.   
      
   But it never gives sind(x) anywhere close to x.   
      
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