Asked by raja
if vectors a+b+c=0 and modulus of the vectors a, b and c are 3 ,5 and 7 respectively. find the angle between the vectors a and b.
Answers
Answered by
Reiny
let the angle be Ø
by the cosine law
7^2 = 3^2 + 5^2 -2(3)(5)cosØ
30cosØ = 9+25-49
cosØ = -15/30 = -1/2
Ø = 150°
by the cosine law
7^2 = 3^2 + 5^2 -2(3)(5)cosØ
30cosØ = 9+25-49
cosØ = -15/30 = -1/2
Ø = 150°
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.