Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN: 9781133382119
Author: Swokowski
Publisher: Cengage
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PLs help ASAP. Pls show all work and steps. Pls circle the final answer also.

Transcribed Image Text:2.
(a) Prove that
sin (A+B) cos B-cos (A+B) sin B=sin A.
sin (A+B)
(b) Hence, or otherwise, prove that
sin Asin B
cos (A+B)
sin A cos B
-=csc B sec B
Expert Solution
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