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Mathematics
Mathematics
Problem
Identify the correct simplified form of
sin
(
α
+
β
)
+
sin
(
α
−
β
)
\sin(\alpha+\beta)+\sin(\alpha-\beta)
sin
(
α
+
β
)
+
sin
(
α
−
β
)
\,(for any real angles
α
\alpha
α
and
β
\beta
β
). a)
2
cos
α
sin
β
2\cos\alpha\sin\beta
2
cos
α
sin
β
b)
sin
α
cos
β
\sin\alpha\cos\beta
sin
α
cos
β
c)
2
sin
α
cos
β
2\sin\alpha\cos\beta
2
sin
α
cos
β
d)
2
sin
α
sin
β
2\sin\alpha\sin\beta
2
sin
α
sin
β
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