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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)
s
30)
w
1
s
(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
50
1G
(DRG
'
)
3
(G)
E
sin
(
30
)
05
sin
(
30
)
05
sin
–1
(
0.5
)
30
sin
–1
(
0.5
)
30
DRG
312
DRG
312
(
π
÷
2
)
r
90
(
π
÷
2
)
r
90
50
g
45
50
g
45