For tangential projections of the patella, which of the foll…

For tangential projections of the patella, which of the following statements is true? ( hint – assess each individually they are not describing a particular projection as a group)1.  the patient may be placed prone2.  the affected knee is flexed so that the tibia and fibula form a 50-60 degree angle with the table3.  the central ray is directed 45 degrees cephalad through the patellofemoral joint4.  the tangential patella projection may also be performed with the patient supine