anonymous
  • anonymous
Find the exact values of sin A and cos A. Write fractions in lowest terms
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
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anonymous
  • anonymous
Can anybody help me with this? Thank you!
anonymous
  • anonymous
of "sinA and cosA" or of "the mesure of angles A and B"???

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More answers

anonymous
  • anonymous
sinA and cosA
anonymous
  • anonymous
\[\sin A = \frac{ CB }{ AB } = \frac{ 8 }{ 10 } = 0.8\]
anonymous
  • anonymous
\[\cos A = \frac{ AC }{ AB } = \frac{ 6 }{ 10 } = 0.6\]
anonymous
  • anonymous
simplified it would be cosA = 4/5 and sinA = 3/5 correct?
anonymous
  • anonymous
sinA 4/5 and cosA 3/5 sorry my mistake
anonymous
  • anonymous
No!It's in correct!
anonymous
  • anonymous
well... These are the multiple choice answers that i hate... A. sinA = 4/3 ; cosA = 3/4 B. sinA = 5/4 ; cosA = 5/3 C. sinA = 3/5 ; cosA = 4/5 D. sinA = 4/5 ; cosA = 3/5
anonymous
  • anonymous
have*
anonymous
  • anonymous
so I think the multiple choices are incorrect,I'm sure that sinA=0.8 and cosA=0.6
DebbieG
  • DebbieG
The answer is to be in fraction form. One of the MC answers is equivalent to the decimals you are giving.
anonymous
  • anonymous
Yeah it must be in the lowest fraction term
DebbieG
  • DebbieG
OK, do you see the answer? Do you understand how to get it?
DebbieG
  • DebbieG
(You were correct above, I just want to make sure you are convinced of that, and understand WHY. :)
anonymous
  • anonymous
sorry I didn't see MC well and made mistake , D is correct :)
anonymous
  • anonymous
It should be D right? i had that answer the whole time but last time i submitted my work and put D for the answer, it was incorrect....
anonymous
  • anonymous
4/5 = 0.8 and 3/5 = 0.6
anonymous
  • anonymous
Okay, well at least im sure it should be D now. Thank you to both of you!
DebbieG
  • DebbieG
Yes, it's D. If it was the same triangle image, then that's a typo on the test's key. For that triangle, and those choices, the answer is D. :)
DebbieG
  • DebbieG
You know SOHCAHTOA, right? sin=opp/hyp cos=adj/hyp tan=opp/adj Can't go wrong. :)

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