You are given the polar curve r=cos(θ)+sin(θ) List the first three points (r,θ) where the tangent line is horizontal

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.5: Polar Coordinates
Problem 87E
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You are given the polar curve r=cos(θ)+sin(θ)

List the first three points (r,θ) where the tangent line is horizontal

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