(cos10°-根号3sin10°)/sin20°
(cos10°-根号3sin10°)/sin20°
化简((cos20°/sin20°)cos10°)+根号3(sin10°tan70°)-2cos40°
cos10°-根号3sin10°/sin20°=?要求用辅助角公式做!
化简sin10°-根号3*cos10°
(sin10°+sin20°cos30°)/(cos10°-sin20°sin30°) 值
(2cos70°+根号3sin10°)/cos10°
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°
化简(tan10°-根号3)*(cos10°/sin50°)*(2cos10°-sin20°/cos20°)
(sin10°+sin20°)/(cos10°+cos20°)化简求值