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Question Number 16857 by tawa tawa last updated on 27/Jun/17

Suppose x and y are vectors in R^n  that have the same length. show that  x + y  bisect the angle between  x and y.

$$\mathrm{Suppose}\:\mathrm{x}\:\mathrm{and}\:\mathrm{y}\:\mathrm{are}\:\mathrm{vectors}\:\mathrm{in}\:\mathbb{R}^{\mathrm{n}} \:\mathrm{that}\:\mathrm{have}\:\mathrm{the}\:\mathrm{same}\:\mathrm{length}.\:\mathrm{show}\:\mathrm{that} \\ $$$$\mathrm{x}\:+\:\mathrm{y}\:\:\mathrm{bisect}\:\mathrm{the}\:\mathrm{angle}\:\mathrm{between}\:\:\mathrm{x}\:\mathrm{and}\:\mathrm{y}. \\ $$

Answered by 1234Hello last updated on 06/Jul/17

It is just like vectors i and j.

$$\mathrm{It}\:\mathrm{is}\:\mathrm{just}\:\mathrm{like}\:\mathrm{vectors}\:\boldsymbol{\mathrm{i}}\:\mathrm{and}\:\boldsymbol{\mathrm{j}}. \\ $$

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