Mathematics
Mathematics, 25.07.2021 19:20, divanov

Cho hình chóp SABC là tam giác cạnh đều bằng a tam giác SAB cân tại s và nằm trong mặt phẳng vuông góc với đáy SC tạo với đáy một góc 60 độ gọi Denta là góc giữa hai mặt phẳng SAB và ABC a Tính khoảng cách từ C đến AB b tính tan của Delta tính thể tích của khối

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Cho hình chóp SABC là tam giác cạnh đều bằng a tam giác SAB cân tại s và nằm trong mặt phẳng vuông g...

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