zolowski
zolowski
28-07-2017
Mathematics
contestada
Simplify: 20 sin(2x) cos(2x)
Respuesta :
mathmate
mathmate
28-07-2017
Use the the double angle formula:
sin(2A)=2sin(A)cos(A)
substitute 2x for A, then
20sin(2x)cos(2x)=10(sin(2(2x))cos(2(2x))=10sin(4x)
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