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Mathematics
Mathematics
Problem
If
cos
x
=
−
12
13
\cos x=-\dfrac{12}{13}
cos
x
=
−
13
12
and
180
∘
<
x
<
270
∘
180^{\circ}<x<270^{\circ}
18
0
∘
<
x
<
27
0
∘
, then
tan
x
\tan x
tan
x
equals a)
5
13
\dfrac{5}{13}
13
5
b)
−
5
12
-\dfrac{5}{12}
−
12
5
c)
5
12
\dfrac{5}{12}
12
5
d)
12
5
\dfrac{12}{5}
5
12
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