More P5 Hyperbolic identity help needed Watch
sinh x= (2tanh 0.5x)/(1-tanh^2 0.5x)
sinh x= (2tanh 0.5x)/(1/sech^2 0.5x)
sinh x= (2tanh 0.5x cosh^2 0.5x)
sinh x= (2sinh 0.5x cosh 0.5x) tan = sin over cos, then cancel a cos.
then u have 2sinAcosA = sin(2A) double angle formula.
sinh x = sinh x
dam ok so maybe i got a bit carried away and did it
i think this is right.