anonymous
  • anonymous
What is the y-value for f(x) = cos(x) when x = -90°?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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yrelhan4
  • yrelhan4
what you need to remember is.. cos(-x) = cosx .. so cos(-90)=cos(90)
anonymous
  • anonymous
so there y value is 90?
anonymous
  • anonymous
can you help with this one too ?What is the y-value for f(x) = tan(90°)?

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yrelhan4
  • yrelhan4
the question is actually asking you the value of f(x).. and f(x)=cos(-90). which is equal to cos(90).. so your answer would be cos(90).. i hope you know its value.
anonymous
  • anonymous
i don't...
yrelhan4
  • yrelhan4
make another post of that question.
yrelhan4
  • yrelhan4
umm. cos90=0.. you need to know these sta
yrelhan4
  • yrelhan4
standard values*
yrelhan4
  • yrelhan4
and.. whenever you find an answer useful, you give the person a medal. :)
anonymous
  • anonymous
okay thanks!
anonymous
  • anonymous
can you help me with my other question?

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