Question

√9+y/y^2=-2/3怎么算

Answer 1

问：√9+y/y^2=-2/3怎么算

答：亲，这道题的计算过程如下√9+y/y^2=-2/33+1/y=－2/31/y=－2/3－9/31/y=－11/3y=－3/11

问：根号9+ Y的平方分之Y等于-3分之二

答：好的

答：－3y=2√9+y^2√9y^2=√36+4y^29y^2=36+4y^25y^2=36y^2=36/5y=6/√5

问：求六分之19派的正弦值余弦值正切值

答：sin19π/6=sin7π/6sinπ/6=1/2

答：cos19π/6=cos7π/6=－√3/2

答：sin19π/6=sin7π/6=－1/2

问：？

答：下面的是正确的哦