A Value of Sinh X or Cosh X Is Given $\cosh x = \frac { 13 } { 5 } , x < 0 , \operatorname { coth } x =$

question 83

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.
- $\cosh x = \frac { 13 } { 5 } , x < 0 , \operatorname { coth } x =$

• A) \(- \frac { 12 } { 5 }\)
• B) \(\frac { 12 } { 13 }\)
• C) \(- \frac { 5 } { 13 }\)
• D) \(- \frac { 13 } { 12 }\)

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