If x is measured in degrees and f(x) = cosx, then d f(x) = − sinx

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.2: Trigonometric Equations
Problem 104E
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If x is measured in degrees and f(x) = cosx, then d f(x) = − sinx.
    

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