求值4(cos40°-cos³40°)分之sin²80°乘以(1+√3tan10°)
求值4(cos40°-cos³40°)分之sin²80°乘以(1+√3tan10°)
求值:sin平方80°/4(cos40°-cos立方40°) ×(1+根号3tan10°)
求值:cos40°(1+3tan10°)
(1+根号3tan10°)·cos40°求值
化简:[sin50°+cos40°(1+根号3tan10°)]/sin²70°
不查表求值sin²10°+cos²40°+sin10°cos40° 请有具体的解题过程,
化简sin50°+cos40°(1+√3tan10°)/sin^270°
求值:cos40°+sin50°(1+3tan10°)sin70°1+sin50°
求值{cos40°+sin50°(1+根号3tan10°)}/1+sin50°
[cos40°+sin50°(1+√3tan10°)]/[sin70°√(1+cos40°)]=
(cos40°+sin50°(1+√3tan10°))/sin70°√(1+cos40°)
[cos40°+sin50°(1+√3tan10°)]/[sin70°√(1+cos40°)]=?