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How do I prove this identity
ellenpink
Nov 26, 2011, 12:56 PM
(3-4cos(2x) cos(4x))÷(3 4cos(2x) cos(4x))=tan^(4)(x)
corrigan
Nov 26, 2011, 10:11 PM
Try retyping the question. I don't know exactly what you are asking.