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Mathematics
Mathematics
Problem
Which of the following is equivalent to
sin
α
cos
β
−
cos
α
sin
β
\sin\alpha\cos\beta-\cos\alpha\sin\beta
sin
α
cos
β
−
cos
α
sin
β
? a)
cos
(
α
−
β
)
\cos(\alpha-\beta)
cos
(
α
−
β
)
b)
−
sin
(
α
−
β
)
-\sin(\alpha-\beta)
−
sin
(
α
−
β
)
c)
sin
(
α
−
β
)
\sin(\alpha-\beta)
sin
(
α
−
β
)
d)
sin
(
α
+
β
)
\sin(\alpha+\beta)
sin
(
α
+
β
)
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