Find the four fourth roots of 7+27 and express the roots in polar form. [A] 1.64 cis 3.99°, 1.64 cis 93.99°, 1.64 cis 183.99°, 1.64 cis 273.99⁰ [B] 7.28 cis 15.95°, 7.28 cis 105.95°, 7.28 cis 195.95°, 7.28 cis 285.95⁰ [C] 7.28 cis 3.99°, 7.28 cis 93.99°, 7.28 cis 183.99⁰, 7.28 cis 273.99⁰ [D] 1.64 cis 15.95°, 1.64 cis 105.95°, 1.64 cis 195.95°, 1.64 cis 285.95°
Find the four fourth roots of 7+27 and express the roots in polar form. [A] 1.64 cis 3.99°, 1.64 cis 93.99°, 1.64 cis 183.99°, 1.64 cis 273.99⁰ [B] 7.28 cis 15.95°, 7.28 cis 105.95°, 7.28 cis 195.95°, 7.28 cis 285.95⁰ [C] 7.28 cis 3.99°, 7.28 cis 93.99°, 7.28 cis 183.99⁰, 7.28 cis 273.99⁰ [D] 1.64 cis 15.95°, 1.64 cis 105.95°, 1.64 cis 195.95°, 1.64 cis 285.95°
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
Please solve the following two problems.
![6. Find the four fourth roots of 7+2i and express
the roots in polar form.
[A] 1.64 cis 3.99°, 1.64 cis 93.99°, 1.64 cis
183.99°, 1.64 cis 273.99°
[B] 7.28 cis 15.95°, 7.28 cis 105.95°, 7.28
cis 195.95°, 7.28 cis 285.95°
[C] 7.28 cis 3.99°, 7.28 cis 93.99°, 7.28 cis
183.99°, 7.28 cis 273.99°
[D] 1.64 cis 15.95°, 1.64 cis 105.95°, 1.64
cis 195.95°, 1.64 cis 285.95°
7. Two sides of a triangle have sides 10 and 25. The
length of the third side must be greater than
and less than
[A] 10, 25
[B] 14, 36
[C] 15, 35
[D] 9, 26](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F350faa5f-aabc-49e3-933b-bbb0bdc7c17e%2F452f2a6b-a11e-4feb-9bd1-97bd56fce134%2Falpsc75_processed.png&w=3840&q=75)
Transcribed Image Text:6. Find the four fourth roots of 7+2i and express
the roots in polar form.
[A] 1.64 cis 3.99°, 1.64 cis 93.99°, 1.64 cis
183.99°, 1.64 cis 273.99°
[B] 7.28 cis 15.95°, 7.28 cis 105.95°, 7.28
cis 195.95°, 7.28 cis 285.95°
[C] 7.28 cis 3.99°, 7.28 cis 93.99°, 7.28 cis
183.99°, 7.28 cis 273.99°
[D] 1.64 cis 15.95°, 1.64 cis 105.95°, 1.64
cis 195.95°, 1.64 cis 285.95°
7. Two sides of a triangle have sides 10 and 25. The
length of the third side must be greater than
and less than
[A] 10, 25
[B] 14, 36
[C] 15, 35
[D] 9, 26
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