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Mathematics
Mathematics
Problem
If
sin
θ
=
5
13
\sin \theta = \dfrac{5}{13}
sin
θ
=
13
5
and
θ
\theta
θ
is acute, find the value of
cos
θ
\cos \theta
cos
θ
. a)
144
169
\dfrac{144}{169}
169
144
b)
5
12
\dfrac{5}{12}
12
5
c)
12
13
\dfrac{12}{13}
13
12
d)
8
13
\sqrt{\dfrac{8}{13}}
13
8
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