Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**juantheron****Member**- Registered: 2011-10-19
- Posts: 312

The vector

bisects the angle between the vectors and .determine a unit vector along

.Offline

Let the angle between and be . Taking the dot product gives

Then the angle between

and is and taking the dot product givesThus you can take any *x*, *y* satisfying the last equation and *z* such that

**143** books currently added on Goodreads

Offline