otp.math.acos#

acos(value)#

Returns the value of inverse trigonometric function arccos.

Parameters: value (int, float, Operation, Column) –
Return type: Operation

Examples

>>> data = otp.Tick(A=1)
>>> data['ACOS'] = otp.math.acos(-1).round(4)  # should return pi ~ 3.1416
>>> otp.run(data)
        Time  A    ACOS
0 2003-12-01  1  3.1416

otp.math.arccos() is the alias for otp.math.acos():

>>> data = otp.Tick(A=1)
>>> data['ACOS'] = otp.math.arccos(-1).round(4)
>>> otp.run(data)
        Time  A    ACOS
0 2003-12-01  1  3.1416