Question: trigonometric identities (please show work) Rewrite as a sum or difference: -18cos 2B . Cos 6B A. -9cos8B + 9cos4B B. -9 cos8B + 9

trigonometric identities (please show work)

trigonometric identities (please show work) Rewrite as a sum or difference: -18cos

Rewrite as a sum or difference: -18cos 2B . Cos 6B A. -9cos8B + 9cos4B B. -9 cos8B + 9 sin 4 C. -9COS8B - 9cos 4B D. -9Cos 8B - 9 sin4B

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