A Value of Sinh X or Cosh X Is Given $\sinh x = - \frac { 4 } { 3 } , \tanh x =$

question 84

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.
- $\sinh x = - \frac { 4 } { 3 } , \tanh x =$

• A) \(\frac { 5 } { 3 }\)
• B) \(\frac { 4 } { 5 }\)
• C) \(- \frac { 4 } { 5 }\)
• D) \(- \frac { 5 } { 4 }\)