1/sin10°— √3/sin80°
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/06 08:50:28
1/sin10°— √3/sin80°
1/sin10°— √3/sin80°
1/sin10°— √3/sin80°
原式=1/sin10-√3/cos10
=(cos10-√3sin10)/sin10cos10
=2(1/2cos10-√3/2*sin10)/sin10cos10
=2cos(10+60)/sin10cos10
=4cos70/sin20
=4
祝你学习天天向上~
1/sin10°-√3/sin80°
1/sin10°— √3/sin80°
求值: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
1/sin10度—根号3/sin80度.怎么算
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°