What are Inverse Trigonometry Functions?

If sin θ = x

Then putting sin on the right side

  θ = sin ^-1 x

  sin ^-1 x = θ

So, inverse of sin is an angle.

Similarly, inverse of all the trigonometry function is angle.

Note : Here angle is measured in radians, not degrees.

So, we have

  sin ^-1 x

  cos ^-1 x

  tan ^-1 x

  cosec ^-1 x

  sec ^-1 x

  tan ^-1 x

Let’s take an example

We know that

  sin 30° = ½

Writing angle in radians

  sin π/6 = ½

  π/6 = sin ^-1 ½

  sin ^-1 ½ = π/6