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
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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 
@article{KJM_2024_48_2_a5,
     author = {Feng Qi},
     title = {On {Bounds} for {Norms} of {Sine} and {Cosine} {Along} a {Circle} on the {Complex} {Plane}},
     journal = {Kragujevac Journal of Mathematics},
     pages = {255 },
     year = {2024},
     volume = {48},
     number = {2},
     language = {en},
     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/