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Mathematics
Mathematics
Problem
Given
sin
x
=
5
13
\sin x = \dfrac{5}{13}
sin
x
=
13
5
with
x
x
x
in Quadrant II, find
cos
x
\cos x
cos
x
. a)
12
13
\dfrac{12}{13}
13
12
b)
−
8
13
-\dfrac{8}{13}
−
13
8
c)
−
12
13
-\dfrac{12}{13}
−
13
12
d)
−
144
169
-\dfrac{144}{169}
−
169
144
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