求值:1/sin10°-根号3/cos10°=
1/sin10°-根号3/cos10°=
化简sin10°-根号3*cos10°
求值,根号下1-2sin10°cos10°/cos10°-根号下1-sin^2100°
化简:1/(sin10°) —根号3/cos10°
求1/sin10°-根号3/cos10°的值.
化简1/sin10°-根号3/cos10°
化简求值 tan70°cos10°+根号3sin10°tan70°-2cos40°
求值cos10°/tan20°+根号3sin10°tan70°-2cos40°
化简:(cos10°+根号下3sin10°)/根号下(1-cos80°)=
(2cos70°+根号3sin10°)/cos10°
(cos10°-根号3sin10°)/sin20°
化简:根号(1+2sin10°cos10°)