# Why some polygons disappear when applying sin function?

**URL:** <https://forum.dynamobim.com/t/why-some-polygons-disappear-when-applying-sin-function/6180>\
**Category:** Geometry\
**Created:** [September 14, 2016, 11:59am UTC](https://forum.dynamobim.com/t/why-some-polygons-disappear-when-applying-sin-function/6180 "2016-09-14T11:59:34Z")\
**Posts on this page:** 1\
**Showing post:** 3

<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:** [September 14, 2016, 12:28pm UTC](https://forum.dynamobim.com/t/why-some-polygons-disappear-when-applying-sin-function/6180/3 "2016-09-14T12:28:15Z")

</div>

@abdelgawad this has been discussed before on this post [Why Math.sin values are different from sin values in formula?](https://forum.dynamobim.com/t/why-math-sin-values-are-different-from-sin-values-in-formula/5860/2)

---

_[View the full topic](https://forum.dynamobim.com/t/why-some-polygons-disappear-when-applying-sin-function/6180)._