“$\Sin x = 2$: Imaginary Trigonometry.” Trigonometric Delights, by Eli Maor, Princeton University Press, PRINCETON; OXFORD, 1998, pp. 181–191, www.jstor.org/stable/j.ctt1r2f46.26. Accessed 13 Aug. 2020.
Maor, E. (1998). $sin x = 2$: Imaginary Trigonometry. In Trigonometric Delights (pp. 181-191). PRINCETON; OXFORD: Princeton University Press. Retrieved August 13, 2020, from www.jstor.org/stable/j.ctt1r2f46.26
Maor, Eli. "$sin X = 2$: Imaginary Trigonometry." In Trigonometric Delights, 181-91. PRINCETON; OXFORD: Princeton University Press, 1998. Accessed August 13, 2020. www.jstor.org/stable/j.ctt1r2f46.26.
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