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Mathematics
Mathematics
Problem
In Exercises 11-51, prove the identity. 19.
(
1
−
sin
β
)
(
1
+
csc
β
)
=
1
−
sin
β
+
csc
β
−
sin
β
csc
β
(1-\sin \beta)(1+\csc \beta)=1-\sin \beta+\csc \beta-\sin \beta \csc \beta
(
1
−
sin
β
)
(
1
+
csc
β
)
=
1
−
sin
β
+
csc
β
−
sin
β
csc
β
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