Shukurov Z, Ergashova E, Ashirova M. KOMPLEKS SONLARNI TRIGONOMETRIK KO‘RINISHINING SODDA IFODASI VA EYLER FORMULASINING SODDA ISBOTI. ISEPSMJ [Internet]. 2023May13 [cited 2024Oct.18];:291-5. Available from: https://journal.bilig.uz/isepsmj/article/view/384