A Reference angle is the smallest angle obtained when measured from the terminal side. If the angle is acute the reference angle is the angle itself.
Reference Angle Calculator is a amazing online which calculates the reference angle for any given angle if any angle is entered in the block provided. So there is no need to get messed up with these angles just enter the angle and get you reference angle instantly.
|Calculating Angles||Calculate Angle of Right Triangle||Calculate Central Angle||What are Angles|
|Angle of Depression and Angle of Elevation||A Acute Angle|