laoho485 laoho485
  • 08-09-2021
  • Mathematics
contestada

một máy bay đang bay ở độ cao 1700m.Từ đài quan sát người ta nhìn thấy máy bay dưới 1 góc 25° so với mặt đất.Tính khoảng cách từ đài quan sát đến máy bay

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agginuwu
agginuwu agginuwu
  • 08-09-2021
dùng cos tính ra, = 1875,7m
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