A value of $\sinh x$ or $\cosh x$ is given. Use the definitions and the identity $\cosh ^ { 2 } x - \sinh ^ { 2 } x = 1$ to find the value of the other indicated hyperbolic function.
-$\cosh x = \frac { 17 } { 15 } , x

Question

A value of $\sinh x$ or $\cosh x$ is given. Use the definitions and the identity $\cosh ^ { 2 } x - \sinh ^ { 2 } x = 1$ to find the value of the other indicated hyperbolic function.
-$\cosh x = \frac { 17 } { 15 } , x < 0 , \operatorname { csch } x =$
A) $\frac { 15 } { 8 }$
B) $- \frac { 8 } { 15 }$
C) $- \frac { 15 } { 8 }$
D) $- \frac { 15 } { 17 }$

Quizplus · Accepted Answer

The Answer of A value of $\sinh x$ or $\cosh x$ is given. Use the definitions and the identity $\cosh ^ { 2 } x - \sinh ^ { 2 } x = 1$ to find the value of the other indicated hyperbolic function.
-$\cosh x = \frac { 17 } { 15 } , x < 0 , \operatorname { csch } x =$
A) $\frac { 15 } { 8 }$
B) $- \frac { 8 } { 15 }$
C) $- \frac { 15 } { 8 }$
D) $- \frac { 15 } { 17 }$

A Value Of sinh⁡x\sinh xsinhx Or cosh⁡x\cosh xcoshx Is Given Use the Definitions and the Identity

A Value Of $\sinh x$ Or $\cosh x$ Is Given Use the Definitions and the Identity