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Originally Posted by chiph588@ Show . Consider
Originally Posted by simplependulum Consider Much more elegant than my solution!
Originally Posted by chiph588@ Much more elegant than my solution! What was your solution? De Moivre/binomial/Vieta?
Originally Posted by TheCoffeeMachine What was your solution? De Moivre/binomial/Vieta? Let . From the third angle formula, we obtain
Originally Posted by chiph588@ Let . From the third angle formula, we obtain If you're wondering how I came up with this, it's called working backwards .
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