Muhammademinov Alijon Azizjon Ogli. “Complex Solutions of Trigonometric Equations and The Roots of the Equation sin(x) = a”. Eurasian Journal of Physics,Chemistry and Mathematics 17 (April 26, 2023): 80–81. Accessed November 28, 2024. https://geniusjournals.org/index.php/ejpcm/article/view/4073.