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education/math/MATH1060 (trig)/Graphing.md

@@ -65,7 +65,12 @@ If $cot(x) = \frac{cos(x)}{sin(x)}$, then:
 
 Without any transformations applied, the period of $cot(x) = \pi$. Because $cot$ is an odd function, $cot(-x) = -cot(x)$. 
 
+# Features of Tangent and Cotangent
+Given the form $y = A\tan(Bx - C) + D$ (the same applies for $\cot$)
+- The stretching factor is $|A|$
+- The period is $\frac{\pi}{|B|}$
+- The domain of $tan$ is all of $x$, where $x \ne \frac{C}{B} + \frac{\pi}{2} + {\pi}{|}$
 # Examples
 > Given $-2tan(\pi*x + \pi) - 1$
-- $A = -2, B = \pi, C = -\pi, D = -1$
-- 
+- $A = -2$, $B = \pi$, $C = -\pi$, $D = -1$
+- Stretch