Question

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Answer 1

\(\large \dfrac{1-\sin ^2 \theta}{\cos^2 \theta}\)

Answer 2

like that ?

Answer 3

use this :
\(\sin^2 \theta + \cos^2 \theta = 1\)

Answer 4

\(\large \dfrac{1-\sin ^2 \theta}{\cos^2 \theta} = \dfrac{\cos^2\theta}{\cos^2\theta} = 1\)

Answer 5

yw