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Moderate

Finding Equivalent Trig Functions

ACTMAT-VB9IJC

Which of the following is equivalent to the following trigonometric expression?

$$\cfrac{1}{\sin^2 x}-\cot^2x$$

A

$\cfrac{1-\cot^2 x}{\sin^2 x}$

B

$\cfrac{1+\cos^2 x}{\sin^2 x}$

C

$-1$

D

$0$

E

$1$