Question #5e4dc

1 Answer

Mar 5, 2017

$cos x = -12/13$

Explanation:

Reminder:
$tan (x) = - tan (-x)$ --> $tan x = 5/12$
$tan x = sin x/(cos x)$ --> $cos x = sin x/(tan x)$
In this case -->
$cos x = sin x/(tan x) = (-5/13)(12/5) = - 12/13$

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Question #5e4dc

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