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:

Child Culture

The idea that each group of children has games, sayings, clothing styles, and superstitions that are not common among adults, just as every culture has distinct values, behaviors, and beliefs.

Test-retest Reliability

The consistency of an individual's scores on the same test administered on two different occasions.

Content Validity

The degree to which a test or assessment measures all facets of the concept it intends to measure.

Internal Consistency

A measure of reliability; the degree to which different test items that propose to measure the same general construct produce similar results.