S i n, Dr g, Trigonometric and inverse trigonometric functions – Casio fx-50F PLUS User Manual
Page 28: Angle unit conversion
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k
Trigonometric and Inverse Trigonometric Functions
sin(, cos(, tan(, sin
–1
(, cos
–1
(, tan
–1
(
A Syntax and Input
sin({
n
}), cos({
n
}), tan({
n
}), sin
–1
({
n
}), cos
–1
({
n
}), tan
–1
({
n
})
Example: sin 30 = 0.5, sin
–1
0.5 = 30 (Angle Unit: Deg)
s30)w
1s(sin
–1
)
0.5)w
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
i
× sin(30) is supported for example, but sin(1 +
i
)
is not.
• The angle unit you need to use in a calculation is the one that is currently selected as the
default angle unit.
k
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
1G(DRG') to display the menu screen shown below.
1(D): Degrees
2(R): Radians
3(G): Grads
Example: To convert π
2
radians and 50 grads both to degrees
The following procedure assumes that Deg (degrees) is currently specifi ed for the default
angle unit.
(1e(π )/2)
1G(DRG')2(R)E
501G(DRG')
3(G)E
s i n
(
30
)
05
s i n
(
30
)
05
s i n
–1
(
0 . 5
)
30
s i n
–1
(
0 . 5
)
30
D
R
G
3
1 2
D
R
G
3
1 2
(
π
÷2
)
r
90
(
π
÷2
)
r
90
50
g
45
50
g
45