The day before PI

Calculus Level 3

Evaluate lim⁡n→∞ 2nsin⁡(90∘n) \displaystyle \lim_{n \to \infty} \ 2n\sin \left (\frac{90^{\circ}}{n}\right).

Give your answer to 2 decimal places.

Peter van der Linden by Peter van der Linden
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