HIMS Braille Sense U2 User Manual page 454

For Arc cosine, press "Enter," with "dots 2-4," then, "a." This is displayed
as acos(.
For Hyperbolic cosine, press "Enter" with "dots 2-4," then, "h." This is
displayed as cosh(.
For example, to calculate the cosine of the 30 degree angles, you press:
Enter with dots 2-4, C, 30 and then ")". Then, press "Enter." Your answer
will be given as 0.8660254.
Tangent Functions:
For Tangent, press "Enter" with "dots 2-3-4-5" and then "t." This is
displayed as tan(.
For Arc tangent, press "Enter" with "dots 2-3-4-5" then "a." This is
displayed as atan(.
For Hyperbolic tangent, press "Enter," with "dots 2-3-4-5," then, "h." This
is displayed as tanh(.
For example, to calculate the tangent of the 30 degree angles, you
press: Enter with dots 2-3-4-5, T, 30 and then ")". That is, tan(30) which
gives you the result of 0.57735027.
Logarithm Functions:
Common logarithm
For Common logarithm, press "Enter" with "dots 1-2-3," and then "n."
This is displayed as log(.
For example, to calculate the common logarithm of the 100, you press:
Enter with dots 1-2-3, N, 100 and then ")". That is, log(100) which gives
the result 2.
Natural Logarithm
For Natural logarithm, press "Enter" with "dots 1-2-3," and then, "e." This
is displayed as ln(.
For example, to calculate the natural logarithm of the 100, you press:
Enter with dots 1-2-3, E, 100 and then ")". That is, ln(100) which gives
the result 4.60517019.