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N Use de Moivre's theorem to prove that cos(no) = 1/2 + sin((N + 1/2)0)/(2 sin(0/2)).
N Use de Moivre's theorem to prove that cos(no) = 1/2 + sin((N + 1/2)0)/(2 sin(0/2)).
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Cambridge International AS & A Level Further Mathematics Coursebook
Authors: Lee Mckelvey, Martin Crozier
1st Edition
1108403379, 978-1108403375
