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Simone
Questions (1)
A lab scale weighs 3 pounds, 5 ounces what is the scale weight in ounces
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Answers (2)
To price this equation first subtract cos(x-y) and cos(x+y) =cosXcosY + sinXsinY -(cosXcosY-sinXsinY) = 2sinXsinY Hence , proved!
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