Question

Hola, alguien me ayuda a simplificar esta identidad trigonometrica?

Answer 1

${senx( \frac{tanx}{secx} -cscx)}\\\\{senx( \frac{ \frac{senx}{cosx} }{ \frac{1}{cosx} }- \frac{1}{senx} )}\\\\{senx[ (\frac{senx}{cosx})( \frac{cosx}{1} )- \frac{1}{senx} ]}\\\\{senx(senx- \frac{1}{senx} )}\\\\{senx( \frac{sen^2x-1}{senx} )}\\\\{sen^2x-1}\\\\{1-cos^2x-1}\\\\{-cos^2x}$

Salu2.!! :)