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How do you simplify $(2tan(x+1))/(1-tan^2(x+1))$ ?

1 Answer

Aug 16, 2015

$(2tan (x+1))/(1-tan^2 (x+1)) = tan 2(x+1)$

Explanation:

$tan 2A = (2tan A)/(1-tan^2 A)$

$(2tan (x+1))/(1-tan^2 (x+1)) = tan 2(x+1)$

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