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

@@ -72,4 +72,7 @@ $$ a^2 - b^2 = (a-b)(a+b) $$
 
 ## Examples
 Simplify $\tan\theta\sin\theta + \cos\theta$:
-1. $\frac{\tan\theta\sin\theta}{\sin\theta} + \frac{cos\theta}\frac{sin\}
+1. $\dfrac{\sin\theta}{\cos\theta} * \sin\theta + \cos\theta$
+2. $\dfrac{\sin^2\theta}{cos\theta} + \cos\theta$
+3. $\dfrac{1 -\cos^2\theta}{cos\theta} + \cos\theta$
+4.