Answer :
Answers and workings in the attachments below.
Check the final graph and you will see that the tangent line creates an 135 degree angle in the positive direction off the x axis.
Check the final graph and you will see that the tangent line creates an 135 degree angle in the positive direction off the x axis.
![View image Аноним](https://us-static.z-dn.net/files/d89/c858f903c30b291b4d0d734ab47971ad.jpg)
![View image Аноним](https://us-static.z-dn.net/files/d7d/38578a7124af8d0b7fad62d8b7c1824f.jpg)
![View image Аноним](https://us-static.z-dn.net/files/d67/0e969b5de7a5473c6347f584f0ea280f.jpg)
![View image Аноним](https://us-static.z-dn.net/files/dd7/de2deb04d656d7b839d47c35fad7859b.png)