Mathematics, 25.06.2021 21:00 johngayden46

Cho hình chóp S. ABC có SA vuông góc với mặt phẳng (ABC), SA=a căn bậc 2 của 2, tam giác ABC vuông cân tại B và AC=2a. Góc giữa đường thẳng SB và mặt phẳng (ABC) bằng

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Cho hình chóp S. ABC có SA vuông góc với mặt phẳng (ABC), SA=a căn bậc 2 của 2, tam giác ABC vuông c...

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