Question

cos^3 x+cos x .sen^2 x = sen x .cotag x​

Answer 1

Explicación paso a paso:

${cos}^{3} x + cosx.{sen}^{2} x = senx.ctgx \\ cosx( {cos}^{2}x + {sen}^{2}x) = senx. \frac{cosx}{senx} \\ cosx = cosx$