> For the complete documentation index, see [llms.txt](https://200ok.gitbook.io/200ok-documents/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://200ok.gitbook.io/200ok-documents/user-manual/built-in-functions/math/asin.md).

# asin

asin() function is the Standard function available in 200OK.

**Description** : The asin function computes the arc sine of a given number within the range of -1 to 1, returning the result in radians. It is a mathematical operation that provides the angle whose sine is the specified number.

**Syntax** : fx\_asin()

**Example** : fx\_asin(0.234) returns 0.23618988434810217 as the response.

Here we go with simple scenario using the above function.

**Scenario** : A structural engineer is designing a bridge and needs to calculate the angle of inclination for the road ramps. They utilize a function to compute the arc sine of the slope's gradient, ensuring safe and efficient road design.

**Request Side** : 

<figure><img src="https://lh7-us.googleusercontent.com/VhZqESTMMHavjxZilGwarrPrnJBfpZToyjyrR00dSmR15AXTYJgfb6mO5r8zH6_9azmMyZptdnTKHFmQFdNcMi86gh5lhjrG8hz1Qp5Q5JwdbcOV6hxs9dMR8UrLLrMujrd4zcnPuKvUDO8STdf5BV4" alt=""><figcaption><p>Passing the value inside the function.</p></figcaption></figure>

<figure><img src="https://lh7-us.googleusercontent.com/442ZaG2asWhd-O0OWnBRBgZNrbpYBxnbaLd2LOwHgUf6e_LUjD6wYzmFyidSNPyxnIb_JRFLQDQ7-DleDrgFJA0-yr3A20DRcPaeUVMNIFwMCQvbexVNaaOluF2aV28t-BWhIJxCg8efsNdt0FlUz4E" alt=""><figcaption><p>Passing the value insdie the function using index pattern</p></figcaption></figure>

<figure><img src="https://lh7-us.googleusercontent.com/br2K-KfaWEKyOkmRnGeMCk8_qIx035I8Xqa_067Pd9Ij2lhs8EVp_I_yB8qqZfiuhJq0WolZ9VBIHeSyVStCyrJ1g4C6bP3_azmYSb7OjnlOVVi4hqR2NXlRuI0ZPxXuQOHsI3RYkvU6eGwmarLFR-I" alt=""><figcaption></figcaption></figure>

<figure><img src="https://lh7-us.googleusercontent.com/dAscRJXok7UO6OOe3QWQ1GMiC_H4Gr4ChfkDB01iqPrh8V2OcO5pN_wMi-0wuWosfyZA5qRfQKRvQVJTTjXvP-Vt738UM2zQs8_M3MMurjjoapfKLNFzu0PEoPLV5QR81f43PnF6H7QcL-Py3RdsCqE" alt=""><figcaption></figcaption></figure>

**Response Side** :&#x20;

<figure><img src="https://lh7-us.googleusercontent.com/RrvIF0-I6-Wx1-R3eQ0NDqZ1SHuHiJJgZjEkMPOeMqGtxr5XQTF8cLZ_3I0JafbovLWmpSyXNfGSvsJsiuiPeJ3XjENboUTwO1xQ4RqqcCCvI89CnVUJZntavAOkDTV6x0ZoJBibfTu7C_jeJqLjX7U" alt=""><figcaption></figcaption></figure>

<figure><img src="https://lh7-us.googleusercontent.com/hQC7QGi25H8UMGgH-c45797ozbO_A6r5jsocyBMe66LH_pQSk4nMTJWBgKFKE4ONz5WHFaGR_iX7H5v9ByoagVioQN-Jwn-nzZiJA-8Gj69EoVyBTz25GID9l0YdB0Ay7Bp_Pl7OQfRyCDYzAOBvlrE" alt=""><figcaption></figcaption></figure>