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# Pythagorean Identity Involving $\tan(\theta)$

TRIG-I03VGB

Which of the following is a Pythagorean Identity involving $\tan(\theta)$?

A

$\tan^{2}(\theta) - 1 = \sec^{2}(\theta)$

B

$\tan^{2}(\theta) + 1 = \sec^{2}(\theta)$

C

$\tan^{2}(\theta) + 1 = \csc^{2}(\theta)$

D

$\tan^{2}(\theta) + 1 = -\sec^{2}(\theta)$