I understand that the derivative of cosx is -sinx, but I need to show the work using trig identities. I worked out a bit of it, but i can't figure out the rest. d coslx) = -sinxcosbe)%3DdxlimCos(Xth)-uslx)lim-70cosly)sinlh)tcosth) sinlr)-coslx)limCosly)sinlh)-cosx) + cuslh)sinlu)

We have to find the derivative of cos(x) by using definition of derivative by limit.

Answered: I understand that the derivative of…

I understand that the derivative of cosx is -sinx, but I need to show the work using trig identities. I worked out a bit of it, but i can't figure out the rest.

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter3: Functions And Graphs

Section3.7: Operations On Functions

Problem 58E

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I understand that the derivative of cosx is -sinx, but I need to show the work using trig identities. I worked out a bit of it, but i can't figure out the rest.