Prove that d/dz sin(z) = cos(z) using Cauchy-Riemann equations
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.2: Trigonometric Equations
Problem 28E
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Prove that
d/dz sin(z) = cos(z)
using Cauchy-Riemann equations
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