arcsine
/ɑrkˈsaɪn/
noun
- The inverse function of the sine, used in trigonometry to find an angle when the sine of that angle is known.
- Many programming languages have a built-in function for arcsine.
- The arcsine of 1 is 90 degrees.
- To find the angle, take the arcsine of the ratio of opposite side to hypotenuse.
Synonyms