mercadonancy22ovf9o4 mercadonancy22ovf9o4
  • 20-09-2017
  • Mathematics
contestada

The point (3, -4) is on the terminal side of an angle 0 . What is cos 0  ?

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apologiabiology
apologiabiology apologiabiology
  • 20-09-2017
draw it
cos=oposite side/hypothuse

oposite side=y=-4
hypotonuse=distance from (0,0) to (3,-4)
which is [tex]D=\sqrt{3^2+(-4)^2}=\sqrt{9+16}=\sqrt{25}=5[/tex]

so it would be -4/5
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