Special right triangle are in the ratio 1 : 2 : 3 and respectively measure 30° (), 60° (), and 90° (). The sides are in the ratio 1 : : 2. The proof of this fact is clear using trigonometry. The geometric proof is: The 30°–60°–90° triangle is the only right triangle whose angles are in an arithmetic progression. The proof of this fact is simple and follows on from the fact that if "α", , are the angles in the progression then the sum of the angles = 180°. After dividing by 3, the angle must be 60°. The right angle
How to Talk to a Liberal (If You Must) "never apologize to, compliment, or show graciousness to a Democrat". The book was on "The New York Times Best Seller list" for 17 weeks. How to Talk to a Liberal (If You Must) How to Talk to a Liberal (If You Must) is a 2004 book by Ann Coulter. The book is a collection of columns written by Coulter on liberalism, the war on terror, and the media. In it, Coulter offers advice gleaned from her experience as a political pundit. She attacks "The New York Times" and the Democratic Party, and sums up her opinion of liberals in two