how to use fontawesome fas icon in angular 7 html code example

Example 1: how to use the downloaded fontawsoem icons in angula

"apps": [
    {
      "root": "src",
      "outDir": "dist",
      ....
      "styles": [
          "styles.css",
          "../node_modules/bootstrap/dist/css/bootstrap.css",
          "../node_modules/font-awesome/css/font-awesome.css" // -here webpack will automatically build a link css element out of this!?
      ],
      ...
  }
  ]
],

Example 2: how to get fas icons in angualr

import { library } from '@fortawesome/fontawesome-svg-core';
import { fas } from '@fortawesome/free-solid-svg-icons';
import { far } from '@fortawesome/free-regular-svg-icons';
library.add(fas, far);