cosh (T- i) = %3D e cosl i e sin 1 + e- cos 1 + i e- sin 1 e cosl i e sin 1 + e-TI cos 1 ie- sin 1 2 e cosl + i e sin 1 e cos 1 + i e-™ sin 1 e cosl - i e sin 1 + eT cos 1 + ie I sin 1 2.
cosh (T- i) = %3D e cosl i e sin 1 + e- cos 1 + i e- sin 1 e cosl i e sin 1 + e-TI cos 1 ie- sin 1 2 e cosl + i e sin 1 e cos 1 + i e-™ sin 1 e cosl - i e sin 1 + eT cos 1 + ie I sin 1 2.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 72E
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![Question 10
cosh (T - i) =
e cosl - i e sin 1 + eI cos 1 + i e- sin 1
eT cosl
- i eT sin 1 + e
cos 1 ieI sin 1
e cosl + i eT sin 1
cos 1 + ie-I sin 1
2
e cosl i e sin 1 + eT cos 1 + i e sin 1
2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6e7879f2-1780-4192-930f-b42059e6fba3%2F7fb37f43-6bd3-46e5-9dd1-5bf928b4ab14%2F01s185_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question 10
cosh (T - i) =
e cosl - i e sin 1 + eI cos 1 + i e- sin 1
eT cosl
- i eT sin 1 + e
cos 1 ieI sin 1
e cosl + i eT sin 1
cos 1 + ie-I sin 1
2
e cosl i e sin 1 + eT cos 1 + i e sin 1
2
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