iwanttogotostanford
  • iwanttogotostanford
ACT PREP QUESTION NEED HELP: Which of the following sets of 3 numbers could be the side lengths, in meters, of a 30 degree -60 degree -90 degree triangle??? A. 1,1,1 B. 1, 1 , sqr root2 C. 1, sqr root 2, sqr root 2 D. 1, sqr root2, sqr root 3 E. 1, sqr root 3, 2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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iwanttogotostanford
  • iwanttogotostanford
@zepdrix @Nnesha
zepdrix
  • zepdrix
Hmm I can't think of a way to explain this one without just giving the answer :P
misty1212
  • misty1212
HI!!

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misty1212
  • misty1212
neither can i because what you need to know is ratio of a 30-60-90 right triangle are \[1:\sqrt3:2\] for short leg : long leg : hypotenuse
iwanttogotostanford
  • iwanttogotostanford
well i already know the answer because i am using a ACT prep book i just need to know how to figure it out for future
misty1212
  • misty1212
there is no other way to say it than just to say it that actually happens to be one of your answer, but so would \[2,2\sqrt3,4\]
iwanttogotostanford
  • iwanttogotostanford
all i need to know is how i can remember problems like it for the ACT
misty1212
  • misty1212
or \[\frac{1}{\sqrt3},1,\frac{2}{\sqrt3}\]
iwanttogotostanford
  • iwanttogotostanford
i dont understand this problem at all..
misty1212
  • misty1212
it is always true that the ration of a 30-60-90 right triangle are \[\huge 1:\sqrt3:2\] what is what you need to know it is a fact
misty1212
  • misty1212
*ratios
iwanttogotostanford
  • iwanttogotostanford
so its just basically a rule i need to know? no real figuring here?
misty1212
  • misty1212
so for example if the short leg hat measure \(10\) then the long leg would have measure \(10\sqrt3\) and the hypotenuse would measure \(20\)
misty1212
  • misty1212
you can derive it, but you don't want to have to do that on the fly remembering is best
iwanttogotostanford
  • iwanttogotostanford
so its a rule they want me to know? an thanks!
misty1212
  • misty1212
yes, it is used in trig all the time
iwanttogotostanford
  • iwanttogotostanford
ah ok i haven't reached trig yet I'm in alg. 2 right now, thanks!
misty1212
  • misty1212
\[\color\magenta\heartsuit\]

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