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anonymous
 4 years ago
Mk, I'm really not sure about this one. If it helps here is the multiple choice:
If sinhx=8/15, find the values of the other hyperbolic functions at x.
anonymous
 4 years ago
Mk, I'm really not sure about this one. If it helps here is the multiple choice: If sinhx=8/15, find the values of the other hyperbolic functions at x.

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asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1Use the relation:\[\cosh^2(x)\sinh^2(x)=1\]

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1there are other relations you can use as well, e.g.:\[\tanh^2(x)=1sech^2(x)\]\[\coth^2(x)=1+csch^2(x)\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Well from elimination, it can only be 2 or 4 since sinhx=8/15, So cosh^2x = 8/15 + 1, correct?

asnaseer
 4 years ago
Best ResponseYou've already chosen the best response.1not quite:\[\cosh^2(x)=1+\sinh^2(x)=1+\frac{64}{225}=\frac{289}{225}\]therefore:\[\cosh(x)=\sqrt{\frac{289}{225}}=\frac{17}{15}\]
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