anonymous
  • anonymous
the exact value of cos(- pi/4)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
1 over sqroot of 2
anonymous
  • anonymous
|dw:1333421485544:dw| what would be the value of a,b,c
Callisto
  • Callisto
cos(- π/4) = cos (π /4) \[=1/\sqrt{2}\] Rationalise the answer \[=(1 \times\sqrt{2})/(\sqrt{2} \times \sqrt{2})\] Can you do it from here?

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More answers

anonymous
  • anonymous
not too sure
anonymous
  • anonymous
.25
anonymous
  • anonymous
how would you put it in the form i said above?
anonymous
  • anonymous
actually it's 1! my B! it's actully 0.99990604980155050801971795294044 to be exact! concure?
anonymous
  • anonymous
what the value for a,b,c
anonymous
  • anonymous
is it 1 for a, 2 for b, and 2 for c
Callisto
  • Callisto
Continue with my workings: \[= \sqrt{2} /2\] Can you get the answer now?
anonymous
  • anonymous
listen to callisto!
anonymous
  • anonymous
i know the answer but i want to know that the values are correct. cause the question only asks for the excat value of the 3 letters in the drawing above!
anonymous
  • anonymous
I got the answer. Thanks guys!
Callisto
  • Callisto
Sorry, i thought you can work it out on your own.. |dw:1333422195003:dw|

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