How Do You Calculate Transverse Speed and Acceleration for a Wave on a String?

[complexc25]

A transverse wave on a string is described by the following wave function.
y = (0.100 m) sin [(x/11 + 3t)]

• (a) Determine the transverse speed and acceleration at t = 0.150 s for the point on the string located at x = 1.60 m.
  
• (b) What are the wavelength, period, and speed of propagation of this wave?
• wrong check mark

I know that to find the transverse speed i need to find the derivative. I need a refresher on the derivative of that sin function, because I am getting the wrong answer. Once i get part A ill find out part B.
thanks in advance

 

[Kurdt]

The derivative of sin(x) is cos(x).