求值:1sin10°
求值:1−2sin10
求值:1/sin10°-根号3/sin80°
求值:1/sin10°-√3/sin80°
求值:[2sin50°+sin10°(1+√3tan10°)]×√2sin80°
求值:sin10°sin50°sin70°sin80°
求值:sin10°sin50°·sin70°
sin10°sin50°sin70° 怎样化简求值?
正弦函数求值sin10°*sin50°*sin70°
求值[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80°)
求值,根号下1-2sin10°cos10°/cos10°-根号下1-sin^2100°
求值:[2sin50°+sin10°(1+√3tan10°)]√(1-sin^2 10°)
sin40°*(1-sin10°)/[sin10°*(cos20°)^2]