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Use the Graph to Complete the Identity cos⁡2xcos⁡5x+sin⁡2xsin⁡5x=?\cos 2 x \cos 5 x + \sin 2 x \sin 5 x = ?

Question 196

Multiple Choice

Use the graph to complete the identity.
- cos⁡2xcos⁡5x+sin⁡2xsin⁡5x=?\cos 2 x \cos 5 x + \sin 2 x \sin 5 x = ?
Use the graph to complete the identity. - \cos 2 x \cos 5 x + \sin 2 x \sin 5 x = ? A) y = \cos 3 x B) y = \sin 3 x C) y = \cos 7 x D) y = \sin 7 x


A) y=cos⁡3xy = \cos 3 x
B) y=sin⁡3xy = \sin 3 x
C) y=cos⁡7xy = \cos 7 x
D) y=sin⁡7xy = \sin 7 x

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