Question

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wrong answer : reported ​

Answer 1

$\frac{ {cos}^{2} \theta - {cot}^{2} \theta + 1}{ {sin}^{2} \theta + {tan}^{2} \theta - 1} \\ \\ = \frac{ {cos}^{2} \theta - \frac{ {cos}^{2} \theta}{ {sin}^{2} \theta } + 1 }{ {sin}^{2} \theta + \frac{ {sin}^{2} \theta }{ {cos}^{2} \theta } - 1 } \\ \\= \frac{ \frac{ {cos}^{2} \theta {sin}^{2} \theta - {cos}^{2} \theta + {sin}^{2} \theta }{ {sin}^{2} \theta} }{ \frac{ {sin}^{2} \theta {cos}^{2} \theta + {sin}^{2} \theta - {cos}^{2} \theta }{ {cos}^{2} \theta} }\\ \\ = \frac{ {cos}^{2} \theta }{ {sin}^{2} \theta}\\ \\ = {cot}^{2} \theta$

Answer 2

Answer:

hope it's helpful answer

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