Recently I discovered a few more proofs, some related to A Level mathematics. You can access these proofs by clicking on the links below.

Derive the formula of an ellipse: **https://plus.google.com/+mathsvideosforweb/posts/ZF8D3ghSNRD**

Discover the distance between point A and B on the edge of a circle: **https://plus.google.com/+mathsvideosforweb/posts/9fmuEJ4qeXY**

Find the area of a sector within a circle: **https://plus.google.com/+mathsvideosforweb/posts/cHt9t9PeSfg**

Formula for a torus, derived from scratch: **https://plus.google.com/+mathsvideosforweb/posts/TS84TL44BYd**

Create the mathematical singularity shown in movie documentaries: **https://plus.google.com/+mathsvideosforweb/posts/7p2onSzNYte**

Parameterised formula for a torus derived from scratch: **https://plus.google.com/+mathsvideosforweb/posts/AZrVMiPVdbv**

Derive the formula for an ellipsoid (normal and parameterised) from scratch: **https://plus.google.com/+mathsvideosforweb/posts/Wijf94ztn3v**

**Other news:**

If you love mathematical proofs, please feel free to join my ‘mathematics proofs’ Google community at: **https://plus.google.com/communities/106007058741903558109**

I’ve also got a new Facebook page related to stuff about the universe and also mathematics. You can add me as a friend by accessing this link: **http://www.facebook.com/tiago.hands**