Physics · Vector Algebra
Which of the following relations is true for two unit vectors â and î making an angle θ with each other?
- 1|â − î| = |â + î| cos(θ/2)
- 2|â + î| = |â − î| cos(θ/2)
- 3|â − î| = |â + î| tan(θ/2)✓
- 4|â + î| = |â − î| tan(θ/2)
Correct answer
|â − î| = |â + î| tan(θ/2)
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