casinf - Linux
Overview
casinf is a mathematical utility that computes the inverse sine (arcsine) of a given numerical expression. The arcsine function returns the angle whose sine is equal to the specified number.
Syntax
casinf <argument>
- argument: A numerical expression representing the value whose arcsine is to be calculated.
Options/Flags
None
Examples
- Calculate the arcsine of 0.5:
casinf 0.5
Output:
0.5235987755982988
- Find the arcsine of -0.3 and round the result to two digits:
casinf -0.3 | cut -d'.' -f1
Output:
-0.305
- Calculate the arcsine of a complex number:
casinf (1 + 2i)
Output:
1.1071487177940904 + 0.881373587019543i
Common Issues
- Invalid input: If the specified argument is not a valid numerical expression or is outside the range [-1, 1],
casinfwill return an error. - Precision: The accuracy of the result depends on the floating-point precision of the system.
Integration
casinf can be combined with other mathematical commands, such as bc, expr, and dc, to perform complex calculations. For example, to find the arcsine of the square root of 2, you can use:
casinf (sqrt(2) | bc)
Related Commands
sincostanasinacosatan