Mathematics
Senior High
二乗が出てきた時の図がイマイチわかりません。教えてください！！
次の不等式を与えられた範囲で解け.
(1) 4 cos20-3≤0 (0°≤0≤180°)
(2) 3tan20-1>0 (0°≤0≤180°)
(3) 2sin
30-√√3<008(0°≤0≤60°)
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