Sharp EL-506H

Put the angular mode at "RAD".
Key In: .25 [X] CEZI [=] [^
Answer: 0.707106781 (Remember to use the second function key)
2. Inverse Trigonometric Functions
Calculate: Sin~' 0.5 In .
Put the angular mode at "DEG". I^ey
Key In: .5 l2n(IFl |sin-'|
Answer: 30
Calculate: Cos"' —1
Put the angular mode at "RAD". / To
Key in: 1 lindFl |cos"'| *
Answer: 3.141592654 (Value of rr
In t
/To
his manual, we will always show the
key's second functions as follows;
sin'^
iZndFl I sin I
|2nd^ fiin^
enter a negative number, press the\
\ key after numerals. /
3. Hyperbolic and Inverse Hyperbolic Functions
When using the hyperbolic and inverse hyperbolic functions "HYP" will appear in
the lower part of the display.