化简求值2sin50°+cos10°(1+3tan10°)cos35°cos40°+cos50°cos55°
化简求值2sin50°+cos10°(1+3tan10°)cos35°cos40°+cos50°cos55°
求值:2sin50°+cos10°*(1+根号3tan10°)/cs35°cos40°+cos50°cos55°
求值:(tan10°-根号3)cos10°÷sin50°
求值:(tan10°-√3)×cos10°/sin50°
求值:cos40°+sin50°(1+3tan10°)sin70°1+sin50°
求值{cos40°+sin50°(1+根号3tan10°)}/1+sin50°
求值:2sin50°+sin80°(1+3tan10°)1+cos10°
2sin50°cos50°怎么等于cos50°cos40°+sin50°sin40°
求值:cos40°(1+3tan10°)
2sin50°+cos10°(1+3tan10°)1+cos10°
计算sin50°cos40°+cos50°sin40°
sin50°*cos40°+cos50°*sin40°