(cos10°-cos50°)÷(sin10°-sin50°)
求值:2sin50°+cos10°*(1+根号3tan10°)/cs35°cos40°+cos50°cos55°
计算1sin50°+3cos50°
化简求值2sin50°+cos10°(1+3tan10°)cos35°cos40°+cos50°cos55°
sin40°cos10°-SIN10°SIN50°的值是
2sin50°cos50°怎么等于cos50°cos40°+sin50°sin40°
化简:cos10°(tan10°-根号3)/sin50°
求值:(tan10°-√3)×cos10°/sin50°
(tan10°–√3)cos10°/sin50°
化简:根号(1+2sin10°cos10°)
1、求证:cos40°(cos10°+√3 sin10°)=cos10°
(tan10°-根号3)×cos10°÷sin50°
计算sin50°cos40°+cos50°sin40°