How this calculation works
Find the three principal inverse trigonometric angles for a value shared by their domains.
THE FORMULA
Apply the principal inverse sine, cosine and tangent branchesA worked example
For 0.5, arcsine is 30° and arccosine is 60°.
Good to know
The common input must be between −1 and 1.
Reference: OpenStax Algebra and Trigonometry (opens in a new tab) ↗
Read the result
Find the three principal inverse trigonometric angles for a value shared by their domains.
The primary result is labeled “Arcsine (°)”. Keep the input definitions in view when comparing this result with another method.
Try a related calculation
The common input must be between −1 and 1.
For a related exercise, try the quadratic equation solver.
A few questions, answered
How can I check the default inputs by hand?
For 0.5, arcsine is 30° and arccosine is 60°.
Which rule does this calculator apply?
Apply the principal inverse sine, cosine and tangent branches