Geodesic
On Bounds for Norms of Sine and Cosine Along a Circle on the Complex Plane
Kragujevac Journal of Mathematics, Tome 48 (2024) no. 2, p. 255 .

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

In the paper, the author presents lower and upper bounds for norms of the sine and cosine functions along a circle on the complex plane.
Classification : 33B10, 30A10
Keywords: bound, norm, sine, cosine, double inequality, circle, complex plane, difference, open problem 
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     author = {Feng Qi},
     title = {On {Bounds} for {Norms} of {Sine} and {Cosine} {Along} a {Circle} on the {Complex} {Plane}},
     journal = {Kragujevac Journal of Mathematics},
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     publisher = {mathdoc},
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     number = {2},
     year = {2024},
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     url = {http://geodesic.mathdoc.fr/item/KJM_2024_48_2_a5/}
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Feng Qi. On Bounds for Norms of Sine and Cosine Along a Circle on the Complex Plane. Kragujevac Journal of Mathematics, Tome 48 (2024) no. 2, p. 255 . http://geodesic.mathdoc.fr/item/KJM_2024_48_2_a5/