Trigonometric And Inverse Trigonometric Functions; Angle Unit Conversion - Casio fx-50F User Manual

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Trigonometric and Inverse Trigonometric Functions

A Syntax and Input
n n
sin({ }), cos({ }), tan({
Example: sin 30 = 0.5, sin
A Notes
• These functions can be used in the CMPLX Mode, as long as a complex number is not
used in the argument. A calculation like
is not.
• The angle unit you need to use in a calculation is the one that is currently selected as the
default angle unit.
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Angle Unit Conversion

You can convert a value that was input using one angle unit to another angle unit.
After you input a value, press
D D R R G G
1 2 1 2 3 3
Example: To convert
The following procedure assumes that Deg (degrees) is currently specifi ed for the default
angle unit.
sin(, cos(, tan(, sin
–1
n n
}), sin ({ }), cos
–1
0.5 = 30 (Angle Unit: Deg)
s (sin
(DRG ) to display the menu screen shown below.
1 (D): Degrees
2 (R): Radians
3 (G): Grads
π
radians and 50 grads both to degrees
2
(
–1 –1
(, cos (, tan
–1 –1
n n
({ }), tan ({ })
s30)w
–1
) 0.5)w
i
× sin(30) is supported for example, but sin(1 +
(π ) /2)
(DRG ) 2 (R)
50
(DRG )
3 (G)
E-27
–1
(
s i n s i n ( ( 30 30 ) )
s i n s i n –1 –1 ( ( 0. 5 0. 5 ) )
π π
r r
÷ 2 ÷ 2
( ( ) )
g g
50 50
05 05
30 30
i
)
90 90
45 45