Mathematics, 16.06.2021 05:00, amandamac7339

Cho ∆ABC, AB=4,5, AC=6, BC=7,5. Đường phân giác BD của góc B cắt AC tại D. Tính các tỉ số lượng giác của góc ABD

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Cho ∆ABC, AB=4,5, AC=6, BC=7,5. Đường phân giác BD của góc B cắt AC tại D. Tính các tỉ số lượng giác...