(Solved): stuck on c and d 15. A rectangular prism measuring 3 by 4 by 5 is drawn on a coordinate axis as show ...

15. A rectangular prism measuring 3 by 4 by 5 is drawn on a coordinate axis as shown in the diagram. a. Determine the coordinates of points $C,P,E$, and $F$. b. Determine position vectors for $\overrightarrow{DB}$ and $\overrightarrow{CF}$. c. By drawing the rectangle containing $\overrightarrow{DB}$ and $\overrightarrow{OP}$, determine the acute angle between these vectors. d. Determine the angle between $\overrightarrow{OP}$ and $\overrightarrow{AE}$.