struggling on this one

[cowgiljl]

y = x*square root of 3 + 2sinx find the x coordinate on (0,2pie) of the points where y has a horizonal tangent line

I am really lost and struggling on getting this started :cry: :confused:

thanks joe

[HallsofIvy]

Since y= x√(3)+ 2 sin x, y'= &radic(3)+ 3 cos x. The tangent line is horizontal when y'= 0.