A ladder is L $=8\mathrm{.}12$ m long. The ladder is leaning against a wall at point B$.$ The wall is smooth $($frictionless$),$ but the ground is rough with a coefficient of static friction of $0\mathrm{.}328.$ gravity g $=9\mathrm{.}806$ m$/$s$^2.$ What is the angle if the mass of the ladder is $30\mathrm{.}0$ kg and the normal force at point B is $98\mathrm{.}20$ N$?($The ladder is not on the verge of sliding in$$this$$position$.$