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Mathematics
Mathematics
Problem
If
2
sin
α
cos
β
sin
γ
=
sin
β
sin
(
α
+
γ
)
2 \sin \alpha \cos \beta \sin \gamma = \sin \beta \sin(\alpha + \gamma)
2
sin
α
cos
β
sin
γ
=
sin
β
sin
(
α
+
γ
)
.Then, show
tan
α
,
tan
β
\tan \alpha, \tan \beta
tan
α
,
tan
β
and
tan
γ
\tan \gamma
tan
γ
are in harmonic progression.
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