HP 10s User Manual page 20

Scientific Functions
To perform a scientific function calculation, press
to enter COMP mode.
@ Some scientific calculations may take longer than
other types of calculations.
@ You can start the next calculation after the
calculation result displays on the screen .
@ 7=3.14159265359
m= Trigonometric and Inverse Trigonometric Functions
@ To change the current angle units (degrees,
radians or grads), press repeatedly until
the following screen appears.
Deg Rad Gra
1 2 3
@ Now press the number key ( [1], [2] or [3))
corresponding to the angle unit you want to use.
(Note that 90°= 5 radians = 100 grads )
@ Example 1: sin]12° 34' 56" =0.217840422
(woo) ------(1} (Deg) — (sinl 1 2 G+] 34 >) 56 Go)
@ Example 2: cos( q rad)=0.5
(Woot) --+-+-( 2] (Rad) (cos) ( ¢ _ ) (swt) (7) 3 |
@ Example 3: cos"! & =0.252(rad)(= 7 (rad))
Wong)... [2] (Rad)
Ge O2M20 Be) Boz) eS
@ Example 4: tan'0.789=38.27343992
(Wong) -.- -.- [1] (Deg) (SH [ton] 0.789
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