Simplify each of the given expressions. Expansion of any term is not necessary; recognition of the proper
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Simplify each of the given expressions. Expansion of any term is not necessary; recognition of the proper form leads to the proper result.
cos7x cos3x + sin 7x sin3x
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Related Book For
Basic Technical Mathematics
ISBN: 9780137529896
12th Edition
Authors: Allyn J. Washington, Richard Evans
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