Question

Cosh x = 25/7, x > 0

Answer 1

we have

cosh(x)=25/7 and x>0

Remember that

`\cos h^2(x)-\sinh ^2(x)=1`

substitute the given function

`((25)/(7))^2-\sinh ^2(x)=1`
`\sinh ^2(x)=(625)/(49)-1`
`\sinh ^2(x)=(576)/(49)`

therefore

sinh(x)=24/7