Respuesta
Explicación paso a paso:
[tex]\frac{1}{1-sen^{2}A } - tanA\frac{1}{cotA} \\\\\frac{1}{cos^{2}A } - \frac{tanA}{cotA} \\\\\\\frac{1}{cos^{2} A} -1\\\\\frac{1-cos^{2}a }{cos^{2}A } \\\\\frac{sen^{2}A }{cos^{2} } \\\\tang^{2} A[/tex]
espero que te ayude
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Respuesta
Explicación paso a paso:
[tex]\frac{1}{1-sen^{2}A } - tanA\frac{1}{cotA} \\\\\frac{1}{cos^{2}A } - \frac{tanA}{cotA} \\\\\\\frac{1}{cos^{2} A} -1\\\\\frac{1-cos^{2}a }{cos^{2}A } \\\\\frac{sen^{2}A }{cos^{2} } \\\\tang^{2} A[/tex]
espero que te ayude