Manuals/calci/ATAN

ATAN(x)

• Where x is the TAN of the angle and is from -1 to 1.
• by default the result obtained will be in radians

• Calci returns the arcTAN (inverse Tan) of a number. Output is the angle in radians.
• To convert arcTAN to the degrees, multiply it by 180/PI.
• The number can be a single value or any number of values.

For example, ASIN(0.5,(-0.2),1) gives the arcTAN or inverseTAN values for each element.

Description

Consider     x = -0.8    then     =ATAN(0.8)    gives    0.64350110879

• This function is the inverse function of tangent in trignometry
• Also called as Cyclometric function.
• ATAN is described as arctan and denoted by $tan^{-}1(x)$.
• In ATAN(x) ,x value appilcable for all real numbers.Here x is in radians.

Number	ATAN
50	1.550798992821746
0.76	0.6498704494119476
-0.76	-0.6498704494119476

Examples

ATAN(x)

• x   is the angle in radians.

TAN(Radian)	Value
ATAN(0)	0
ATAN(1)	0.7853981633974483
ATAN(90)	1.5596856728972892

See Also

• TAN

• DTAN

• TANH

References

• List of Trigonometric Functions
• ATAN