diff --git a/education/math/MATH1060 (trig)/The Unit Circle.md b/education/math/MATH1060 (trig)/The Unit Circle.md index 59f62a4..38919e4 100644 --- a/education/math/MATH1060 (trig)/The Unit Circle.md +++ b/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.