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Mathematics, 10.11.2021 21:00 geminigirl077

Use demoivre's theorem to show that;
cos4¤ =8 cos4¤ -8cos2¤+1

Use demoivre's theorem to show that;cos4¤ =8 cos4¤ -8cos2¤+1

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Use demoivre's theorem to show that;
cos4¤ =8 cos4¤ -8cos2¤+1
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