Q5. Use DeMoivre's theorem to find cos 40 and sin 40 in terms of cos and...
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Q5. Use DeMoivre's theorem to find cos 40 and sin 40 in terms of cos and sin 0. [Note that cos 40 may be written in terms of cosines only or sines only; find both forms.] Also find cos 50 and sin 50 in terms of cosand sin 0. Q5. Use DeMoivre's theorem to find cos 40 and sin 40 in terms of cos and sin 0. [Note that cos 40 may be written in terms of cosines only or sines only; find both forms.] Also find cos 50 and sin 50 in terms of cosand sin 0.
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