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Mathematics
Problem
In Exercises 73-78, confirm the identity. 78.
ln
∣
sec
θ
+
tan
θ
∣
+
ln
∣
sec
θ
−
tan
θ
∣
=
0
\ln |\sec \theta+\tan \theta|+\ln |\sec \theta-\tan \theta|=0
ln
∣
sec
θ
+
tan
θ
∣
+
ln
∣
sec
θ
−
tan
θ
∣
=
0
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