1.20. Show that (a) r sin(ak) k=1 = r sin a r2-2r cos a+1'

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.4: Values Of The Trigonometric Functions
Problem 19E
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1.20. Show that
(a) r sin(ak)
r sin a
=
22r cos a+1'
k=1
Transcribed Image Text:1.20. Show that (a) r sin(ak) r sin a = 22r cos a+1' k=1
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