Question

1/cos²—tan² =1

please give me answer..........​

Answer 1

Answer:

LHS. RHS

1/COS²-TAN ². 1

SEC²-TAN²

1

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Answer 2

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