[1/(cos10°)]-[ (根号3)/(sin80°)]=___
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tan70°cos10°【根号3tan20°—1】
化简1/sin10°-根号3/cos10°
化简:1/(sin10°) —根号3/cos10°
1/sin10°-根号3/cos10°=
1/sin10°减去根号3/cos10°,求过程.
求1/sin10°-根号3/cos10°的值.
[1/(cos10°)]-[ (根号3)/(sin80°)]=___
求值:1/sin10°-根号3/cos10°=
急求1/cos10°-根号3/sin80°
求值 1/sin10°-根号3/cos10°
计算1/(sin10°)-(根号3)/(cos10°)的值.
tan70°cos10(根号3tan20°-1)=?
化简sin10°-根号3*cos10°
化简 根号下1+cos10°
化简:cos10(根号3tan20-1)
化简tan70*cos10(根号3tan20-1)
tan 70cos10(根号3tan20-1)
根号(1-2sin10°cos10°)/(cos10°-根号1-cos^2170°)