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Mathematics
Mathematics
Problem
If
α
\alpha
α
and
β
\beta
β
are acute angles such that
α
−
β
=
17
∘
\alpha - \beta = 17^\circ
α
−
β
=
1
7
∘
, express
sin
α
cos
β
−
cos
α
sin
β
\sin\alpha\cos\beta - \cos\alpha\sin\beta
sin
α
cos
β
−
cos
α
sin
β
as a single trigonometric ratio of a numerical angle.
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