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Mathematics
Problem
If
cos
x
=
−
5
13
\cos x = -\dfrac{5}{13}
cos
x
=
−
13
5
and
x
x
x
lies in the third quadrant, calculate
tan
x
\tan x
tan
x
. a)
−
12
5
-\dfrac{12}{5}
−
5
12
b)
12
13
\dfrac{12}{13}
13
12
c)
12
5
\dfrac{12}{5}
5
12
d)
5
12
\dfrac{5}{12}
12
5
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