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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
College of Mathematics, Inner Mongolia University for Nationalities, School of Mathematical Sciences, Tianjin Polytechnic University, Institute of Mathematics, Henan Polytechnic University
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Qi, Feng
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.
