1/sin10°-√3/sin80°
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1/sin10°-√3/sin80°
1/sin10°-√3/sin80°
1/sin10°-√3/sin80°
1/sin10-√3/sin80
=(sin80-√3*sin10)/(sin80*sin10)
=(cos10-√3*sin10)/(cos10*sin10)
=4(cos10/2-√3*sin10/2)/(2sin10*cos10)
=4*(cos60*cos10-sin60*sin10)/sin20
=4*cos(60+10)/sin20
=4*cos70/sin20
=4
1/sin10°-√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)
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:[2sin50°+sin10°(1+√3tan10°)]×√2sin80°
求[2sin50°+sin10°(1+√3tan10°0]sin80°的值
1/sin10°-√3/sin80°=______________我用计算机算出来是4
sin50°(cos10°+√3sin10°)/sin80°的值()A1/2 B-1/2 C1 D-1
化简【2sin50°+sin10°(1+根号3tan10°)】乘根号下2(sin80°的平方)
请问这个题怎么解?sin50°+sin10°(1+根号3*tan10°)根号下2*sin80°平方
三角函数恒等变换1/sin10° -根号3/sin80的值为如果比较麻烦也可以直接写思路
sin10°乘以sin40°+sin50°乘以sin80°
求值:sin10°sin50°sin70°sin80°