Triangles length is 5cm and 8cm . What could the other length be

If sin A = 3/4, then cos A and tan A are equal to what?
GIVEN DATA sin A =3/4 ,FINDING VALUE cos A, tan A sin A =3/4 =height/hypotenuse then height =3, hypotenuse =4 find another side hypotenuse^2=length^2+height^2 4^2=3^2+length^2 16=9+length^2 √7=length then cos A=length/ hypotenuse cos A=√7/4 ten A =height/length ten A=3/ √7 follow link solution easy