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Using Euler’s formula, show that for any natural number n, cos(nθ) + isin(nθ) = (cos(θ) +...

Using Euler’s formula, show that for any natural number n, cos(nθ) + isin(nθ) = (cos(θ) + isin(θ))n Using this, show that cos(3θ) = cos3 (θ) − 3 cos(θ) sin2 (θ).

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