Arcsin (or inverse sine) is a mathematical function that takes an angle and returns the ratio of the opposite side to the hypotenuse of a right triangle. It is the inverse of the sine function, which takes a ratio and returns an angle. Arcsin is used in trigonometry to calculate angles in a right triangle.

An Arcsin Calculator is a type of calculator that can calculate the inverse sine (arcsine) of a given angle. It is used to find the angle from the ratio of the opposite side to the hypotenuse of a right triangle.

To calculate arcsin, use the inverse sine function on a calculator. To do this, enter the number you want to find the arcsin of and press the inverse sine button (often labeled sin-1 or arcsin). The calculator will then display the arcsin of the number.

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