Differentiation of Trigonometry Functions
www.math.ucdavis.edu › ~kouba › CalcOneDIRECTORYDIFFERENTIATION OF TRIGONOMETRY FUNCTIONS. In the following discussion and solutions the derivative of a function h ( x) will be denoted by or h ' ( x) . The following problems require the use of these six basic trigonometry derivatives : These rules follow from the limit definition of derivative, special limits, trigonometry identities, or the quotient rule.
Lecture 9 : Derivatives of Trigonometric Functions ...
www3.nd.edu › ~apilking › Math10550Derivatives of Trigonometric Functions 1. From our trigonometric identities, we can show that d dx sinx= cosx: d dx sinx= lim h!0 sin(x+ h) sin(x) h = lim h!0 sin(x)cos(h) + cos(x)sin(h) sin(x) h = lim h!0 sin(x)[cos(h) 1] + cos(x)sin(h) h = lim h!0 sin(x) [cos(h) 1] h + lim h!0 cos(x) sin(h) h = sin(x) lim h!0 [cos(h) 1] h + cos(x) lim h!0 sin(h) h = cos(x): 2. We can also show that