Christoforos A.
asked • 05/13/21I need assistance solving a problem
3cos(1.5x)cos(0.5x)
we can either write this as sum of sine or cosine functions
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1 Expert Answer
Mark M. answered • 05/13/21
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Mathematics Teacher - NCLB Highly Qualified
3[cos (1.5x) cos (0.5x)}
3[0.5[(cos (1.5x - 0.5x) + cos (1.5x + 0.5x)]]
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Touba M.
05/13/21