anonymous
  • anonymous
Medal and Fan for anyone who can help with a few Pre calc questions :)
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
anonymous
  • anonymous
Im not sure that i have the correct answer here
anonymous
  • anonymous
Suppose a triangle has sides a, b, and c, and let be the angle opposite the side of length a. If cos < 0, what must be true? (Points : 3)

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anonymous
  • anonymous
I only know the answer for if cos>0
anonymous
  • anonymous
@paki could you please take a look im stumped
anonymous
  • anonymous
|dw:1435326048691:dw| cos negative means it is an obtuse angle so a^2>b^2+c^2
anonymous
  • anonymous
Alright gotcha.
anonymous
  • anonymous
but thats not then final answer is it?
anonymous
  • anonymous
??
anonymous
  • anonymous
Well the one i selected looks correct, but im not 100% sure on it, and this test is kinda important
anonymous
  • anonymous
But i get what you're saying its more than likely D.
anonymous
  • anonymous
anonymous
  • anonymous
I gave you my reasoning. If it is convincing then take it:P

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