cost+cos4t+cos7t / sint+sin4t+sin7t = cot4t

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter2: Analytic Trigonometry
Section2.2: Verifying Trigonometric Identities
Problem 3ECP
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Verify the identity

cost+cos4t+cos7t / sint+sin4t+sin7t = cot4t

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