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Complete the Identity cos4xcos8xcos4x+cos8x= ? \frac { \cos 4 x - \cos 8 x } { \cos 4 x + \cos 8 x } = \text { ? }

question 147

Multiple Choice

Complete the identity.
- cos4xcos8xcos4x+cos8x= ? \frac { \cos 4 x - \cos 8 x } { \cos 4 x + \cos 8 x } = \text { ? }


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