# Unit vector 2D

Determine coordinates of unit vector to vector AB if A[-6; 8], B[-18; 10].

Correct result:

x =  -0.99
y =  0.16

#### Solution:

$\Delta x = -18 +6 = -12 \ \\ \Delta y = 10 -8 = 2 \ \\ \vect{ AB } = (-12; 2) \ \\ |\vect{ AB }| = \sqrt{\Delta x^2+ \Delta y^2 } = 12.17 \ \\ x = \dfrac{\Delta x}{|\vect{ AB }|} = -0.99$
$y = \dfrac{\Delta y}{|\vect{ AB }|} = 0.16$

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Showing 1 comment:
Tza0987
097=134
134=824
824=650
650=?

Tips to related online calculators
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Pythagorean theorem is the base for the right triangle calculator.

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