Question

Given two vectors vector A and vector B such that vector A+vector B (A+B) which is equal to 11i-j+5k and Vector A minus vector B (A-B) which is equal to -5i+11j+9k
find angle between vector B and Vector A plus vector B (A+B) ?​

Answer 1

Explanation:

problem is solved in proper way...and pls follw me