H7 Analytische meetkunde Flashcards

1
Q

hoek tussen 2 vectoren

A

cos α = x1 . x2 - y1 . y2
—————————————–
vkw x1² +y1² . vkw x2² + y2²

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2
Q

loodrechte stand van 2 vectoren

A

x1 x2 + y1 y2 = 0

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3
Q

inproduct

A

–>u . –> v = ||–>u|| . || –>v|| . cos α
OF –>u . –>v = x1x2 + y1y2

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4
Q

loodrechte stand van richtingsvectoren

A

–>n (u,v) is de normaalvector van r

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5
Q

voorwaarde loodrechte stand van rechten

A

r loodrecht op b <=> a1 .a2 = -1

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6
Q

afstand van een punt tot een rechte

A

d(P,r) = |uxp + vyp + w| / vkw u²+v²

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7
Q
A
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