Mathematics, 03.09.2021 07:20 emelylug033
cho hình chóp SABC . Gọi I, J lần lượt là trung điểm của AB và BC , Gọi K thuộc SC sao cho KC> KS . Tìm giao tuyến của hai mặt phẳng (IJK) và ( SAC)
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Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .
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cho hình chóp SABC . Gọi I, J lần lượt là trung điểm của AB và BC , Gọi K thuộc SC sao cho KC> KS...
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