Manuals/calci/ACOS

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ACOS(x)


  • Where x is the number and it is varying from -1 to 1.
  • The value of ACOS(x) is in radians.
  • Calci returns the arcCOS (inverse Cos) of a number. Output is the angle in radians.
  • The number can be a single value or any number of values.

For example, ACOS(0.5,(-0.2),1) gives the arcCOS or inverseCOS values for each element.

Description

Consider     x = 0.8    then     =ACOS(0.8)    gives    0.64350110879

  • This function is the inverse function of COS in trigonometry.
  • Also it is called as Cyclometric function.
  • ACOS is described as arcCOS and denoted by  .
  • In ACOS(x), x value should be with in -1 & 1.
  • To find the angle in degrees, multiply the result angle with 180/PI().
  • DEGREES function can also be used.

For example ACOS(0.5)*180/PI() or DEGREES(ACOS(0.5)) gives 60

Examples

ACOS(x)

  • x   is the COS of the angle
ACOS(x) Angle(radians)
ACOS(0) 1.57079632
ACOS(1) 0

See Also

References