Mathematics, 16.06.2021 15:40 Bradgarner772

Cho hình chóp tứ giác đều SABCD có cạnh đáy bằng a, góc giữa mặt bên và đáy bằng 60. Gọi I là tâm của mặt cầu ngoại tiếp hình chóp S. ABCD. Tính khoảng cách từ I đến mặt phẳng (SAB)

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Cho hình chóp tứ giác đều SABCD có cạnh đáy bằng a, góc giữa mặt bên và đáy bằng 60. Gọi I là tâm củ...