sin10°cos45°+sin80°cos55°
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sin10°cos45°+sin80°cos55°
1/sin10°-√3/sin80°
sin10°乘以sin40°+sin50°乘以sin80°
求值:sin10°sin50°sin70°sin80°
sin10°cos35°+sin80°sin35°=?
(2cos20°-sin10°)/sin80°化简求值
1/sin10°-根号3/sin80°的值为
1/sin10°-根号3/sin80°的值为
求值:1/sin10°-根号3/sin80°
1/sin10°-根号3/sin80°=
求值:1/sin10°-√3/sin80°
1/sin10°— √3/sin80°
求值[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80°)
[2sin50°+sin10°(1+√3tan10°)]*√2(sin80°)*(sin80度)
求[2sin50°+sin10°(1+√3tan10°0]sin80°的值
求值:[2sin50°+sin10°(1+√3tan10°)]×√2sin80°
cos10°+根号下3sin10°为什么等于2sin80°
1/sin10°-√3/sin80°=______________我用计算机算出来是4