Find the angle between the planes whose vector equations are
`barr *(2hati + 2hatj - 3hatk) = 5 and barr *(hati -2hatj+hatk) =7`.
A. `"cos"^(-1)((11)/(sqrt(238)))`
B. `"cos"^(-1)((13)/(sqrt(238)))`
C. `"cos"^(-1)((15)/(sqrt(238)))`
D. `"cos"^(-1)((9)/(sqrt(238)))`
