Asked by Kaur
If A-B perpendicular to A
and
|A-B|=B/2
What is an angle between A and B
Question is from vector chapter
Plse help
and
|A-B|=B/2
What is an angle between A and B
Question is from vector chapter
Plse help
Answers
Answered by
oobleck
|A|^2 + |A-B|^2 = (-B)^2
A^2 + (B/2)^2 = B^2
4A^2 = 3B^2
If you draw the vectors, you see that
tanθ = |A-B|/|A| = B/2A = 1/√3
A^2 + (B/2)^2 = B^2
4A^2 = 3B^2
If you draw the vectors, you see that
tanθ = |A-B|/|A| = B/2A = 1/√3
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