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CHANGELOG.md

@@ -5329,6 +5329,7 @@ A total of 29 people contributed to this release. Thank you to the following con
 
 <details>
 
+-   [`310150f`](https://github.com/stdlib-js/stdlib/commit/310150f9e910eb0b202ef2cefcf6a99d1ee0c1ed) - **docs:** fix notes [(#2623)](https://github.com/stdlib-js/stdlib/pull/2623) _(by Gunj Joshi)_
 -   [`81b48ae`](https://github.com/stdlib-js/stdlib/commit/81b48aeb9d5d2b16fe039f9db7e710c95a35585f) - **feat:** update namespace TypeScript declarations [(##2621)](#2621) _(by stdlib-bot, Philipp Burckhardt)_
 -   [`691e774`](https://github.com/stdlib-js/stdlib/commit/691e774930ab3d983998e53ad16dbf4bd5eb0c76) - **refactor:** make base parameter compulsory in `math/base/special/floorsd` [(##2617)](#2617) _(by Gunj Joshi)_
 -   [`60c4a36`](https://github.com/stdlib-js/stdlib/commit/60c4a36e189ddaf4aba2d9f4096e7a066d5dcbea) - **remove:** remove `math/base/ops/cadd` _(by Athan Reines)_

base/special/cospi/lib/main.js

@@ -42,10 +42,11 @@ var MAX_INTEGER_P1 = MAX_INTEGER + 1;
 *
 * ## Notes
 *
-* -   `sin(-x) = -sin(x)`
-* -   `sin(+n) = +0`, where `n` is a positive integer
-* -   `sin(-n) = -sin(+n) = -0`, where `n` is a positive integer
 * -   `cos(-x) = cos(x)`
+* -   `sin(-x) = -sin(x)`
+* -   `cos(π/2) = 0`
+* -   `cos(0) = 1`
+* -   `cos(π) = -1`
 *
 * @param {number} x - input value
 * @returns {number} function value

base/special/cospi/src/main.c

@@ -34,10 +34,11 @@ static const double MAX_INTEGER_P1 = STDLIB_CONSTANT_FLOAT64_MAX_SAFE_INTEGER +
 *
 * ## Notes
 *
-* -   `sin(-x) = -sin(x)`
-* -   `sin(+n) = +0`, where `n` is a positive integer
-* -   `sin(-n) = -sin(+n) = -0`, where `n` is a positive integer
 * -   `cos(-x) = cos(x)`
+* -   `sin(-x) = -sin(x)`
+* -   `cos(π/2) = 0`
+* -   `cos(0) = 1`
+* -   `cos(π) = -1`
 *
 * @param x    input value
 * @return     function value