How do you find the derivative of #1 / (sinx+cosx)#? Calculus Basic Differentiation Rules Summary of Differentiation Rules 1 Answer Eddie Jun 24, 2016 # -1/sqrt(2)csc(x + pi/4) cot(x + pi/4)# Explanation: Done using an alternative approach #(1 / (sinx+cosx))'# #= ((1/sqrt(2)) / (sinx cos pi/4+cosx sin pi/4))'# #= 1/sqrt(2)((1) / (sin(x + pi/4)))'# #= 1/sqrt(2)(csc(x + pi/4))'# #= -1/sqrt(2)csc(x + pi/4) cot(x + pi/4)# Answer link Related questions What is a summary of Differentiation Rules? What are the first three derivatives of #(xcos(x)-sin(x))/(x^2)#? How do you find the derivative of #(e^(2x) - e^(-2x))/(e^(2x) + e^(-2x))#? How do I find the derivative of #y= x arctan (2x) - (ln (1+4x^2))/4#? How do you find the derivative of #y = s/3 + 5s#? What is the second derivative of #(f * g)(x)# if f and g are functions such that #f'(x)=g(x)#... How do you calculate the derivative for #g(t)= 7/sqrtt#? Can you use a calculator to differentiate #f(x) = 3x^2 + 12#? What is the derivative of #ln(x)+ 3 ln(x) + 5/7x +(2/x)#? How do you find the formula for the derivative of #1/x#? See all questions in Summary of Differentiation Rules Impact of this question 2221 views around the world You can reuse this answer Creative Commons License