Relax

Respuesta :

Jane:  Think:  the hypotenuse of her ramp is 14 inches and the angle opposite the rise is 30 degrees.  Thus, cos 30 deg = (adj side) / (hyp) = (adj side) / (14 in).

Solving for (adj side), we get   (adj side) = (14 in)(sqrt(3)/2) = 7 sqrt(3) inches.