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Mathematics
Mathematics
Problem
If
cos
α
=
−
5
13
\cos \alpha = -\dfrac{5}{13}
cos
α
=
−
13
5
and
α
\alpha
α
lies in the interval
(
π
,
3
π
2
)
(\pi,\,\tfrac{3\pi}{2})
(
π
,
2
3
π
)
, find: a.
sin
α
\sin \alpha
sin
α
b.
tan
α
\tan \alpha
tan
α
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