Match each given expression with one of the expressions from below (A-L):

 1. $\sin(-x)$
 2. $\csc(-x)$
 3. $\csc(x)$
 4. $\sec(x)$
 5. $\sec^2(x)$
 6. $\cot(x)$

Answers:

A. $-\sin(x)$
B. $\displaystyle{\frac{1}{\sin(x)}}$
C. $1-\sin^2(x)$
D. $-\csc(x)$
E. $\displaystyle{\frac{\cos(x)}{\sin(x)}}$
F. $\displaystyle{\frac{\sin(x)}{\cos(x)}}$
G. $\sec^2(x)-1$
H. $1+\tan^2(x)$
I. $1-\cos^2(x)$
J. $1+\cot^2(x)$
K. $\displaystyle{\frac{1}{\csc(x)}}$
L. $\displaystyle{\frac{1}{\cos(x)}}$