cos10°+√3sin10°
化简sin10°-根号3*cos10°
1、求证:cos40°(cos10°+√3 sin10°)=cos10°
(2cos70°+根号3sin10°)/cos10°
(cos10°-根号3sin10°)/sin20°
化简:1/(sin10°) —根号3/cos10°
求1/sin10°-根号3/cos10°的值.
1/sin10°-根号3/cos10°=
化简1/sin10°-根号3/cos10°
cos20°cos10°+sin10°sin10°
化简((cos20°/sin20°)cos10°)+根号3(sin10°tan70°)-2cos40°
化简求值 tan70°cos10°+根号3sin10°tan70°-2cos40°
求值cos10°/tan20°+根号3sin10°tan70°-2cos40°