[back]  3.35. Cosine Surface 
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The cosine surface [ 11 ] is represented by the following equations.
x = cos(u) 
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y = cos(v) 
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z = cos(u + v) 
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The cosine surface is the counterpart to the sine surface .
To represent the area, the two parameters u and v can assume the following values (domain of definition), for example.
u is an element from the number set [pi, pi] 

v is an element from the number set [pi, pi] 
Since the cosine surface is a closed figure, the definition range must be adhered to exactly, it cannot be changed with the plugin.
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