To begin evaluating | sin*xcos°xdx conveniently, express: cos x as (cos?x) 2cosx and use the Half - Angle Formula cos?x=. (1+ cos2r) A sin*x as (sin?x)2and use the identity sin?x =1- cos?x

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 61E
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To begin evaluating
sintxcos xdx conveniently, express:
1
A
cos x as (cos?x)²cosx and use the Half - Angle Formula cos?x=-(1+ cos2x)
B
sin*x as
(sin?x) 2and use the identity sin?x =1- cos?x
sin*x as (sin?x)2and use the Half – Angle Formula sin?x=-(1- sin²2x)
2
cos x as (cos?x) ?cosx and use the identity cos?x=1- sin?x
E) None
Transcribed Image Text:To begin evaluating sintxcos xdx conveniently, express: 1 A cos x as (cos?x)²cosx and use the Half - Angle Formula cos?x=-(1+ cos2x) B sin*x as (sin?x) 2and use the identity sin?x =1- cos?x sin*x as (sin?x)2and use the Half – Angle Formula sin?x=-(1- sin²2x) 2 cos x as (cos?x) ?cosx and use the identity cos?x=1- sin?x E) None
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