计算 1/cos80-根号3/sin80
计算 1/cos80-根号3/sin80
计算(1/cos80)-(√3/sin80)
1/cos80º-根号3/sin80º=?
如何证明:(1除cos80度)减(根号3除以sin80度)=4
不查表,计算1/sin10°-(根号3)/sin80°=
1/sin10°-根号3/sin80°
(sin50(1+根号3*tan10)-cos20)/cos80根号(1-cos20)
求(1/sin10度)-(根号3/sin80度)的值
求值:1/sin10°-根号3/sin80°
1/sin10度 - 3的根号/sin80度=?
[2sin50+sin10(1+根号3tan10)]sin80
1/sin10°-根号3/sin80°的值为