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--- math:rad_deg [2021/01/06 14:25] – created epix
+++ math:rad_deg [2021/01/13 04:55] (current) – Degrees epix
@@ Line 11: / Line 11: @@
 ===== Degrees =====
-FIXME Don't be lazy and add atleast a basic definition of degrees.
+Degrees is an angle measurement where one full revolution is 360.
+==== Degrees Minutes Seconds ====
+Instead of a decimal representation, degrees can also be specified in minutes and seconds, akin to standard time((which supposedly degrees are [[https://en.wikipedia.org/wiki/Degree_(angle)#History|based on]])). The conversion to decimal is $x + \frac{y}{60} + \frac{z}{3600}$ where x is whole unit degrees, y is minutes((denoted by ' mark/foot mark)), and z is seconds((denoted by " mark/inches mark)).
 ===== Radians =====
@@ Line 22: / Line 25: @@
 Degree to **Radian**: $d * \frac{\pi}{180} = r$
 Radian to **Degree**: $r * \frac{180}{\pi} = d$
+===== Complementary and Supplementary Angles =====
+  * Angles are complementary when they sum up to 90° or $\frac{\pi}{2}$
+  * Angles are supplementary when they sum up to 180° or $\pi$

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