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Question #72c35

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Dec 3, 2016

$tan(-(200pi)/3)$
$=-tan((200pi)/3)$
$=-tan((198pi+2pi)/3)$

$=-tan(66pi+(2pi)/3)$

$=-tan(33xx2pi+(2pi)/3)$

$=-tan((2pi)/3)$

$=-tan(pi-pi/3)$

$=tan(pi/3)$

$=sqrt3$

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