Functions (trigonometric)

• secθ
• cos²θ
• sin²θ
• sin²θ/cos²θ

• A

• B

• C

• D

The expression sinA(cscA-sinA) is equivalent to

• 1
• -sin²A
• cos²A
• cosA

Simplify.

 $\left(\csc\ \alpha\ -\ 1\right)\left(\csc\ \alpha+1\right)$  

• tan²x

• sinx

• cot²x

• cosx

Select the MOST SIMPLIFIED answer for:

 $\frac{\sin^2x}{\sin x\cos x}$  

•  $\cot x$  

•  $\frac{\cos x}{\sin x}$  

•  $\frac{\sin x}{\cos x}$  

•  $\tan x$  

Simplify:  $\cot x\sin x\sec^2x$ 

•  $\cos x$  

•  $\tan x$  

•  $\csc x$  

•  $\sec x$  

Which of the following is true?

(there are more than one answer)

• $\sin x=\frac{1}{\operatorname{cosec}x}$

• $\cot x.\tan x=1$

• $\sec x.\cot x=\cos x$

• $\sin^2x-\cos^2x=-1$

• $\operatorname{cosec}^2x+\sec^2x=\sec^2x.\operatorname{cosec}^2x$

Rewrite tan(x) in terms of sin(x) and cos(x).

• tan(x) = cos(x)/sin(x)

• tan(x) = 1/cot(x)

• tan(x) = sin(x)/cos(x)

• tan(x) = opp/adj

Simplify:  $\cot^2x-\csc^2x+\sin^2x+\cos^2x$  

• 0

• 2

•  $\tan^2x$  

•  $\sec^2x$