求值:【2sin50°+sin10°(1+根号3tan10°)】根号2sin280°
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求值:【2sin50°+sin10°(1+根号3tan10°)】根号2sin280°
求值:【2sin50°+sin10°(1+根号3tan10°)】根号2sin280°
求值:【2sin50°+sin10°(1+根号3tan10°)】根号2sin280°
[2sin50°+sin80°(1+(√3)tan10°)]∕√(1+cos10°)√(1+cos10°)必定是化为√1+2(cos10)^2-1=√2·cos5sin80°(1+(√3)tan10°)=cos10(1+(√3)tan10°)=2(cos10/2+根号3/2sin10)=2sin40[2sin50°+sin80°(1+(√3)tan10°)]=2(sin50+sin40)=2(sin50+cos50)=2·根号2sin95=2·根号2cos5底是√2·cos5那么值是2
求值:[2sin50°+sin10°(1+√3tan10°)]×√2sin80°
求值:【2sin50°+sin10°(1+根号3tan10°)】根号2sin280°
求值sin10°sin30°sin50°sin70°
求值:sin10°sin50°sin70°sin80°
求值:sin10°sin50°·sin70°
sin10°sin50°sin70° 怎样化简求值?
求值[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80°)
求值:[2sin50°+sin10°(1+√3tan10°)]√(1-sin^2 10°)
sin10°sin50°为什么等于1/2(cos40-cos60)
[2sin50°+sin10°(1+根号3tan10°)]乘sin10°等于?
Sin10°cos60°sin50°cos20°sin90°不查表求值
求值【2sin50+sin10(1+根号3*tan10)]*根号下2*sin80,
2sin50°+2sin10°sin40°/cos10°
化简:2sin50°+sin10°/cos10°
化简(2sin50°+sin10°)/cos10°
(2sin10°+sin50°)÷cos50°
化简[2sin50°+sin10°(1+√3tan10°)] √(2sin280°)
[2sin50°+sin10°(1+√3tan10°)]•√(sin²80°)