Arcsine calculator
Arcsine calculator: use ratio, angle unit. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
asin(ratio), converted to the selected angle unit
Variables & units
- Ratio
- Numeric value · minimum -1, maximum 1
- Angle unit
- Select an option
Worked example
arcsin(0.5) = 30 degrees.
Assumptions
Inverse functions return their principal values.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
Use the default input values to find the answer. The reset icon restores those values.
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