What is the derivative of # cos(pi*t/6)#? Calculus Basic Differentiation Rules Chain Rule 1 Answer Gerardina C. Jan 8, 2017 #-pi/6sin(pi/6t)# Explanation: The variable is t, then #f'(t)=-sin(pi/6t)*pi/6# that's #-pi/6sin(pi/6t)# Answer link Related questions What is the Chain Rule for derivatives? How do you find the derivative of #y= 6cos(x^2)# ? How do you find the derivative of #y=6 cos(x^3+3)# ? How do you find the derivative of #y=e^(x^2)# ? How do you find the derivative of #y=ln(sin(x))# ? How do you find the derivative of #y=ln(e^x+3)# ? How do you find the derivative of #y=tan(5x)# ? How do you find the derivative of #y= (4x-x^2)^10# ? How do you find the derivative of #y= (x^2+3x+5)^(1/4)# ? How do you find the derivative of #y= ((1+x)/(1-x))^3# ? See all questions in Chain Rule Impact of this question 5770 views around the world You can reuse this answer Creative Commons License