noun
the inverse function of the sine; the angle that has a sine equal to a given number
• Syn: ↑arcsine, ↑arcsin, ↑inverse sine
• Hypernyms: ↑trigonometric function, ↑circular function
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noun : the inverse function to the sine
if y is the sine of θ, then θ is the arc sine of y
— called also inverse sine
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Trig.
the angle, measured in radians, that has a sine equal to a given number. Abbr.: arc sin; Symbol: sin-1
Also called inverse sine.
[1905-10]
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Useful english dictionary. 2012.