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16-11-2022
Mathematics

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On trace un cercle de centre 0 et de rayon 5 cm, puis une corde [AB] de longueur 6 cm. Soit E le milieu de l'arc AB. a. Montrer que le triangle EAB est isocèle. h b. C et D sont les projetés orthogonaux de O respectivement sur (EA) et (EB). Montrer que CD = 3 cm.

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