$1+\tan^2x=$  

 $1+\cot^2x\ =$  

Simplify

 $\cot\theta\tan\theta$  

Simplify
 $\sec\theta\cot\theta\sin\theta$  

Simplify

  $\cot^2\theta\left(1+\tan^2\theta\right)$  

Simplify

 $\sin\theta\left(\csc\theta-\sin\theta\right)$  

Simplify

 $\tan x\csc x\cos x$  

Simplify

 $\cot\theta\sin\theta$  

Simplify $\left(\sec\theta-1\right)\left(\sec\theta+1\right)$  

Simplify

  $\csc\ x\left(\cos x+\sin x\right)$  

Simplify $\tan x\left(\cot x\ +\ \csc x\right)$  

 $\sec^2x\ -\ 1\ =$  

What happens when you multiply two reciprocal functions?

Simplify  $\left(\csc x+1\right)\left(\csc x-1\right)$  

 $1-\sin^2x\ =$