Toán Lớp 9: tanx = 0,25 khi đó cotx=
a. 4 b.0,25 c.0°25′ d. 0°4′
cảm ơn ạ
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Toán Lớp 9: tanx = 0,25 khi đó cotx=
a. 4 b.0,25 c.0°25′ d. 0°4′
cảm ơn ạ
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