I need help. Write the product as a sum:18 sin(382) sin(23z) ==

Answered: Write the product as a sum: 18 sin(38z)…

Math

Calculus

Write the product as a sum: 18 sin(38z) sin(23z) =

Calculus: Early Transcendentals

8th Edition

ISBN:9781285741550

Author:James Stewart

Publisher:James Stewart

Chapter1: Functions And Models

Section: Chapter Questions

Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...

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Question

I need help.

Write the product as a sum:
18 sin(382) sin(23z) =
=

Expert Solution

Step 1

The given expression is:

$18 \sin (38 z) \sin (23 z)$ ...(1)

Note that the formula used is:

$2 \sin α \cos β = \cos (α - β) - \cos (α + β)$

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