(i) (ii) Show that sin(A + B) + sin(A - B) = 2sin A cos B. Hence, find integers and m‡ n. sin(mx) cos(nx) dx where m and n are both positive, even

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 50E
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(i)
(ii)
Show that sin(A + B) + sin(A − B) = 2sin A cos B.
Hence, find
integers and
TT
sin(mx) cos(nx) dx where m and n are both positive, even
m‡n.
Transcribed Image Text:(i) (ii) Show that sin(A + B) + sin(A − B) = 2sin A cos B. Hence, find integers and TT sin(mx) cos(nx) dx where m and n are both positive, even m‡n.
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