right angled triangle: height of 324 and an adjacent of 54, a hypotenuse of 328.5, find angle of hypotenuse and adjacent

The angle opposite the hypotenuse has 90°.

The angle opposite the 54 side has an angle:  tan(x°) = 54/324  or  x°  =  tan^-1(54/324).

The size of the other angle can be found be subtracting the above answer from 90°.