acosf - Linux

Overview

acosf is a command used to compute the inverse cosine of a floating-point number. It takes an input value within the range [-1, 1] and returns the angle in radians between 0 and π. This command is commonly used in mathematical and scientific computations involving trigonometric functions.

Syntax

acosf(<float>)

Options/Flags

None.

Examples

• Calculate the inverse cosine of 0.5:

acosf(0.5)

Output:

1.0471975511965976

• Find the angle corresponding to a cosine of -0.75:

acosf(-0.75)

Output:

2.356194490192345

Common Issues

• Invalid Input: If the input value is not within the range [-1, 1], the function will return a NaN (Not-a-Number) value.
• Precision Errors: acosf uses floating-point arithmetic, which can introduce small errors due to rounding. To minimize these errors, use higher precision calculations or consider using a specialized math library.

Integration

acosf can be used in conjunction with other commands and tools for advanced tasks:

• Calculate the cosine of an angle:

cosf(acosf(<angle>))

• Solve trigonometric equations:

if (acosf(cosf(<angle>)) == <angle>) { ... }

Related Commands

• cosf: Calculates the cosine of a floating-point number.
• sinf: Calculates the sine of a floating-point number.
• tanf: Calculates the tangent of a floating-point number.