vault backup: 2024-09-16 13:04:14

education/math/MATH1060 (trig)/The Unit Circle.md

@@ -26,6 +26,14 @@ Finding a reference angle:
 | 2        | $180\degree - \theta$ |
 | 3        | $\theta - 180\degree$ |
 | 4        | $360\degree - \theta$ |
+## Other Trigonometric Functions
+All of the following only apply when the denominator is not equal to zero.
+
+$$ tan \theta = \frac{y}{x} $$
+Because the following are inverses of their counterparts, you only need to remember the equivalents for $sin$, $cos$, and $tan$, then just find the inverse by taking $1/v$. 
+$$ sec \theta = \frac{1}{x} $$
+$$ csc = \frac{1}{y} $$
+$$ cot \theta = \frac{x}{y} $$
 
 ## The Pythagorean Identity
 The Pythagorean identity expresses the Pythagorean theorem in terms of trigonometric functions. It's a basic relation between the sine and cosine functions.