arcsine
Some calculators show it as SIN-1.
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Yes, it is called arcsin.
The inverse sine is the cosecant, otherwise known as "hypotenuse over opposite" or arcsine. The cosecant is often confused as being the inverse of the cosine, which, in reality, is the secant, otherwise known as "hypotenuse over adjacent" or arccosine.
The inverse of sine (sin) is cosecant (csc). The inverse of cosine (cos) is secant (sec). The inverse of tangent (tan) is cotangent (cot).
The previous answers are wrong.The answer is 1.5707963267949-0.962423650119207i.
use the inverse sine or cosine or tangent