# Why Math.sin values are different from sin values in formula?

**URL:** <https://forum.dynamobim.com/t/why-math-sin-values-are-different-from-sin-values-in-formula/5860>\
**Category:** FAQ\
**Created:** [August 28, 2016, 12:34am UTC](https://forum.dynamobim.com/t/why-math-sin-values-are-different-from-sin-values-in-formula/5860 "2016-08-28T00:34:57Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![abdelgawad](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/abdelgawad/32/13586_2.png) [@abdelgawad](https://forum.dynamobim.com/u/abdelgawad)\
**Post date:** [August 28, 2016, 12:34am UTC](https://forum.dynamobim.com/t/why-math-sin-values-are-different-from-sin-values-in-formula/5860/1 "2016-08-28T00:34:57Z")

</div>

![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/2X/a/a31d693be5b794ea13610cf62c2c1878121bc112.PNG)

---

<div class="post-metadata">

**Author:** ![Kulkul](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/kulkul/32/49801_2.png) [@Kulkul](https://forum.dynamobim.com/u/Kulkul)\
**Post date:** [August 28, 2016, 2:03am UTC](https://forum.dynamobim.com/t/why-math-sin-values-are-different-from-sin-values-in-formula/5860/2 "2016-08-28T02:03:49Z")

</div>

The Formula node, which uses an external library of functions, expects angles in radians. Documentation for the NCalc project‘s syntax can be found at [http://ncalc.codeplex.com/wikipage?title=functions&referringTitle=Home](http://ncalc.codeplex.com/wikipage?title=functions&referringTitle=Home)

![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/2X/7/7b37dadb2edd080074afd02a51093a0a26e84044.png)

---

<div class="post-metadata">

**Author:** ![Vikram\_Subbaiah](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/vikram_subbaiah/32/50797_2.png) [@Vikram\_Subbaiah](https://forum.dynamobim.com/u/Vikram_Subbaiah)\
**Post date:** [August 28, 2016, 3:09am UTC](https://forum.dynamobim.com/t/why-math-sin-values-are-different-from-sin-values-in-formula/5860/3 "2016-08-28T03:09:11Z")

</div>

@abdelgawad I’d suggest using a code block instead of a formula node

![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/2X/a/a711ca8ed7ad3397e771b4e35c3c5e08c6a5f2bd.png)

…and [post an issue on github](https://github.com/DynamoDS/Dynamo/issues) regarding the formula node behavior