The angle between the vectors with direction ratios are 4, -3, 5 and 3, 4, 5 is
A. π/2
B. π/3
C. π/4
D. π/6
Answer:B
The angle between the vectors with direction ratios are 4, -3, 5 and 3, 4, 5 is
A. π/2 B. π/3 C. π/4 D. π/6