Find inverse trig angle

Compute arcsin, arccos, or arctan and return degrees or radians.

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You can still read how Find inverse trig angle works, the formula, examples, and FAQs below.

Function
Input value
Output unit

Inputs

Function

Input value

Output unit

Results update when you click Calculate.

Angle

30.000000°

asin(0.5000)

Radians0.523599

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What this result means

Compute arcsin, arccos, or arctan and return degrees or radians. Inverse trig functions return the principal angle whose sin/cos/tan matches the input.

Assumptions

Rule dependency: Universal formula.

How is it calculated?

Inverse trig functions return the principal angle whose sin/cos/tan matches the input.

Example

arcsin(0.5) = 30°.

Frequently asked questions

Multiple angles?+

Principal values only — e.g. arcsin in [−90°, 90°].