Math.asin()

The Math.asin() static method returns the inverse sine (in radians) of a number. That is,

∀x∊[−1,1],𝙼𝚊𝚝𝚑.𝚊𝚜𝚒𝚗(𝚡)=arcsin(x)=the unique y∊[−π2,π2] such that sin(y)=xforall x in [{-1}, 1],;mathtt{operatorname{Math.asin}(x)} = arcsin(x) = text{the unique } y in left[-frac{pi}{2}, frac{pi}{2}right] text{ such that } sin(y) = x

Because asin() is a static method of Math, you always use it as Math.asin(), rather than as a method of a Math object you created (Math is not a constructor).

Syntax example: Math.asin(x)