You can build an analytical application with Cube.js, which solves problems like analytic SQL generation, query results caching and execution orchestration, data pre-aggregation, security, and API for query results fetch. For Angular developers, Cube.js has a binding that provides flexibility to work with any charting library, such as ng2-charts. To build an analytical dashboard using Angular, you need to set up a Cube.js backend, define a data model, deploy the backend to Heroku, create a chart component with ng2-charts, and finally build a simple dashboard in your app.component. The Cube.js Angular Client is used to load data from the backend, and Bootstrap provides styling for the dashboard.