A Value of Sinh X or Cosh X Is Given $\cosh x = \frac { 17 } { 15 } , x < 0 , \operatorname { csch } x =$

question 47

Multiple Choice

A value of sinh x or cosh x is given. Use the definitions and the identity cosh²x - sinh²x = 1 to find the value of the
other indicated hyperbolic function.
- $\cosh x = \frac { 17 } { 15 } , x < 0 , \operatorname { csch } x =$

• A) \(- \frac { 8 } { 15 }\)
• B) \(- \frac { 15 } { 17 }\)
• C) \(\frac { 15 } { 8 }\)
• D) \(- \frac { 15 } { 8 }\)

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Definitions:

Gamete

A mature haploid male or female germ cell which is able to unite with another of the opposite sex in sexual reproduction to form a zygote.

Nucleus

The central and most important part of an atom, containing protons and neutrons, or a membrane-bound organelle in eukaryotic cells that contains the genetic material.

Zygote

The initial cell formed when a new organism is produced by sexual reproduction, resulting from the fusion of two gametes (sperm and egg).

Gamete

A mature sexual reproductive cell, such as a sperm or egg, that unites with another cell to form a new organism.