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Trigonometric Identity Simplification

Mark

Which of the following expressions is equivalent to $\frac{\tan^2 x + 1}{\csc^2 x}$ for all values of $x$ for which the expression is defined?

A

$\cos^2 x$

B

$\cot^2 x$

C

$\tan^2 x$

D

$\sin^2 x$

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#2	mahmoudjibrin08	1	2	0m 19s	71
#3	ywlee000000	1	1	1m 07s	33
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