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106.38 PWW: sin α + sin β and cos β − cos α

Published online by Cambridge University Press:  12 October 2022

Elif Esra Arikan and
Hasan Unal
Elif Esra Arikan
Affiliation:
Istanbul Sabahattin Zaim University, Mathematics and Science Education Department, Halkali Street, No: 281 Halkali, Küçükçekmece, Istanbul, Turkey e-mail: elif.arikan@izu.edu.tr
Hasan Unal
Affiliation:
Yildiz Technical University, Mathematics and Science Education Department, Havuzlar, Davutpaşa Campus, Esenler/Istanbul, Turkey e-mail: hunal@yildiz.edu.tr

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The Mathematical Gazette , Volume 106 , Issue 567 , November 2022, pp. 514
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Copyright
© The Authors, 2022. Published by Cambridge University Press on behalf of The Mathematical Association