What is the derivative of #tan(x − y) = x#? Calculus Differentiating Trigonometric Functions Derivative Rules for y=cos(x) and y=tan(x) 1 Answer Ratnaker Mehta Jul 31, 2016 #dy/dx=x^2/(1+x^2)#. Explanation: #tan(x-y)=x# #rArr x-y=arctanx# #rArr x-arctanx=y# #rArr dy/dx=1-1/(1+x^2)=x^2/(1+x^2)#. Answer link Related questions What is the derivative of #y=cos(x)# ? What is the derivative of #y=tan(x)# ? How do you find the 108th derivative of #y=cos(x)# ? How do you find the derivative of #y=cos(x)# from first principle? How do you find the derivative of #y=cos(x^2)# ? How do you find the derivative of #y=e^x cos(x)# ? How do you find the derivative of #y=x^cos(x)#? How do you find the second derivative of #y=cos(x^2)# ? How do you find the 50th derivative of #y=cos(x)# ? How do you find the derivative of #y=cos(x^2)# ? See all questions in Derivative Rules for y=cos(x) and y=tan(x) Impact of this question 1218 views around the world You can reuse this answer Creative Commons License