Find the exact value of each expression: (a) sec(arctan(2)) (b) cos(2sin^−1(5/13))

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section: Chapter Questions
Problem 64RE
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Find the exact value of each expression:

(a) sec(arctan(2))

(b) cos(2sin^−1(5/13))

 

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