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KIELIECOOPERIN
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tan(x+pie) + sin(x+pie) + sin (x-pie) = 0

Answer :

EMMYMASTER3IN

Answer:Use the identity: sin(A+B) = sin(A)cos(B)+cos(A)sin(B) Substitute x for A and pi for B: sin(x+pi) = sin(x)cos(pi)+cos(x)sin(pi) The second term disappears, ...

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