sin can be expanded to: sin 4 COS 2 cos - sin sin 2 O sin 4 sin -cos - + cos –sin 2 4 2 O sin + sin 4 2 cos - COS sin -sin sin 4 2

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 40E
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13 of 19
sin
4
can be expanded to:
2
T
CoS
2
sin
- CoS
sin
O sin
Cos
+ cos
-sin
4
4
O sin
+ sin
2
O cos
COS
sin
4
k|マ
k|マ
Transcribed Image Text:13 of 19 sin 4 can be expanded to: 2 T CoS 2 sin - CoS sin O sin Cos + cos -sin 4 4 O sin + sin 2 O cos COS sin 4 k|マ k|マ
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