fx-82MS fx-82EX fx-9860GII TI-83
On a Casio calculator you can calculate the hyperbolic tangent
hyp tan
To calculate tanh (4.969861521) = 0.9999...°
hyp _ 0. tan tanh_ 0. 4 · 9 6 9 8 6 1 5 2 1 = tanh 4.96986 0.999903563
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