So, we have a triangle whose internal angles are 15°, 75° and 90° Let's draw it Let's start with h = 1 \Rightarrow a = \cos(15^{\circ}) \Rightarrow b = \sin(15^{\circ}) So the ratio, smallest to largest, is \sin(15^\30 60 90 Triangle No Side Length images, similar and related articles aggregated throughout the InternetWhile we can use a geometric proof, it's probably more helpful to review triangle properties, since knowing these properties will help you with other geometry and trigonometry problems
The 30 60 90 Triangle Topics In Trigonometry
