Angles of elevation and depression are angles that are given from above or below a horizontal perspective. For example the angle that is made when you look up at something is an angle of elevation.

Home | Mathematics | Trigonometry | Finding unknown sides or angles Finding unknown sides or angles Trigonometric ratios are used to find the unknown side or angle of a right-angled triangle. There ...

The man who stabbed his son-in-law to death in broad daylight in 2017 at Boon Tat Street in Singapore's Central Business District has passed away. An obituary online announced the passing of Tan ...