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Mathematics 39 Online
OpenStudy (anonymous):

cosht sinht - sinht cost

OpenStudy (anonymous):

I would change the hyperbolic forms to their other forms where \[\sinh(x) = [e^t -e^(-t)]/2\] and \[\cosh(x) = (e^t +e^(-t))/2\], then distribute the cos(t), or solve if you have something it is all equal to.

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