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Acta Universitatis Sapientiae, Mathematica
Volume 11 (2019): Issue 2 (December 2019)
Open Access
On bounds of the sine and cosine along straight lines on the complex plane
Feng Qi
Feng Qi
| Feb 27, 2020
Acta Universitatis Sapientiae, Mathematica
Volume 11 (2019): Issue 2 (December 2019)
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Published Online:
Feb 27, 2020
Page range:
371 - 379
Received:
Nov 04, 2018
DOI:
https://doi.org/10.2478/ausm-2019-0027
Keywords
bound
,
sine
,
cosine
,
horizontal straight line
,
vertical straight line
,
sloped straight line
,
complex plane
© 2019 Feng Qi, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.