a-b-ls-the-unit-vector-a-b-1-ask-a-b-

Question Number 213045 by MrGaster last updated on 29/Oct/24

\overset{⇀}{a}, \overset{⇀}{b l s} t h e u n i t v e c t o r, ∣ \overset{⇀}{a} + \overset{⇀}{b} ∣= 1

a s k ∣ \overset{⇀}{a} - \overset{⇀}{b} ∣ ?

Answered by mr W last updated on 29/Oct/24

Commented by mr W last updated on 29/Oct/24

∣ \vec{a} + \vec{b} ∣= \sqrt{1^{2} + 1^{2} - 1 \times 1} = 1

∣ \vec{a} - \vec{b} ∣= \sqrt{1^{2} + 1^{2} + 1 \times 1} = \sqrt{3} ✓

Commented by MrGaster last updated on 29/Oct/24

T h a n k y o u, s i r .