Given that tan(theta) = 5/12 and theta is in Quadrant 3, what is cos(theta)?
Added by Matthew W.
Step 1
This means that in a right triangle with angle theta, the side opposite theta has length 5 and the adjacent side has length 12. Since theta is in Quadrant 3, we know that it is between 180 and 270 degrees. This means that cosine is negative in this quadrant. Show more…
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