ally5599
ally5599
02-04-2017
Mathematics
contestada
write the product cos(2x)sin(5x) as a sum
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jdoe0001
jdoe0001
02-04-2017
come on now, check your book on the "product to sum" identities
[tex]\bf cos({{ \alpha}})sin({{ \beta}})=\cfrac{1}{2}[sin({{ \alpha}}+{{ \beta}})\quad -\quad sin({{ \alpha}}-{{ \beta}})][/tex]
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