Casio ClassPad 300 User Manual page 109

k Trigonometric Functions (sin, cos, tan) and Inverse Trigonometric
Functions (sin –1 , cos
The first four examples below use "Degree" (indicated by "Deg" in the status bar) as the
angle unit setting. The final example uses "Radian" (indicated by "Rad"). For details about
the [Setup] menu, see "13-2 Using the Setup Menu".
Problem
sin63° = 0.8910065242
2 · sin45° × cos65°
= 0.5976724775
1
cosec30° = = 2
sin30°
sin –1 0.5 =30°
x x
(Determine for sin
π
cos((––) rad) = 0.5
3
Tip
• The angle unit setting you specify remains in effect until you change it.
• To move between entry boxes in a 2D math symbol you can use the cursor keys or tap inside a
box.
2-4-2
Function Calculations
–1 , tan –1 )
Use this keyboard:
mth abc
TRIG
TRIG
TRIG
TRIG
= 0.5.)
TRIG
20021201
cat 2D
s 63 w
Func
2*s 45 )*c 65 w
Func
Can be omitted.
Func 1/s30w or
) N 1 c
9 s 30 w
Func S 0.5 w
".5" can also be used.
Func Change the [Angle] setting to
"Radian".
c7 /3 w or
c)N 7c 3 w
Operation