Trig 3-4

 $\frac{1}{\sin x}\cdot\frac{\sin x}{\cos x}$  

 $\frac{\csc x\tan x}{\sec x}$  

 $\frac{\csc^2x\tan x}{\csc x}$  

 $\csc x\cdot\frac{\sin x}{\cos x}$  

 $2\sec^2\theta$  

 $2\sin^2\theta$  

 $2\csc^2\theta$  

 $2\cos^2\theta$  

 $\frac{\sin\theta}{\cos\theta}\cdot\frac{1}{\cos\theta}$  

 $\frac{\cos\theta}{\sin\theta}\cdot\frac{1}{\sin\theta}$  

 $\frac{\cos\theta}{\sin\theta}\cdot\frac{1}{\cos\theta}$  

 $\frac{\sin\theta}{\cos\theta}\cdot\frac{1}{\sin\theta}$