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Arcsin Calculator

Arcsin Calculator

How to Calculate or Solve Arcsin (Inverse Sine)

The arcsin (also known as the inverse sine or sin-1) is the inverse function of the sine function. It returns the angle whose sine is a given number.

Formula:

arcsin(x) = θ where -1 ≤ x ≤ 1, and θ is the angle whose sine is x.

In other words, if sin(θ) = x, then arcsin(x) = θ. This means that arcsin is the function that undoes the sine operation.

Steps:

  1. Identify the value for which you want to calculate the arcsin.
  2. Ensure that the value is between -1 and 1, as sine can only have values within this range.
  3. Use a calculator or a programming tool to compute the arcsin value in radians or degrees.

Example:

If you want to find arcsin(0.5), you are looking for the angle whose sine is 0.5.

arcsin(0.5) = 30° or π/6 radians

Key Points:

  • The result of an arcsin calculation is an angle, measured in either radians or degrees.
  • Arcsin only works for values between -1 and 1.
  • In radians, the result will be between -Ï€/2 and Ï€/2.
  • In degrees, the result will be between -90° and 90°.

Common Arcsin Values Table

Value (x) arcsin(x) (Radians) arcsin(x) (Degrees)
-1-π/2-90°
-0.5-π/6-30°
000°
0.5π/630°
1π/290°
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