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Question regarding complex numbers
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[QUOTE="Mohsin Hussain, post: 5002975, member: 542234"] [B]1)If a= cosα + i sinα and the equation az[SUP]2[/SUP] + az +1 =0 has a pure imaginary root, then tanα=?[/B] [B]2) cosα+isinα=e[SUP]iα[/SUP] , quadratic formula[/B] [B]3) What i tried to do was,i put a constant real number and tried to solve it and used demoivres theorem, although the answer is getting weirder and weirder. [/B] [/QUOTE]
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Question regarding complex numbers
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