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In: Advanced Math

if x1= Acos(wt+a) and x2+ Bcos(wt+b), how can I show that x1+x2=C cos (wt+c)? Furthermore how...

if x1= Acos(wt+a) and x2+ Bcos(wt+b), how can I show that x1+x2=C cos (wt+c)? Furthermore how can I express the value of C and c? (using complex exponentials)

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