Ilovepurple42043
  • Ilovepurple42043
use the unit circle to find the inverse function value degrees. cos^-1(sqrt2/2)
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
You should ask this question in pre calc you might get a better answer
Ilovepurple42043
  • Ilovepurple42043
is ther a pre calc section?
Nnesha
  • Nnesha
is there more information ?

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Nnesha
  • Nnesha
|dw:1432753605791:dw| CAST rule given cos value is positive so its either in first or 4th quadrant
Ilovepurple42043
  • Ilovepurple42043
ther is sorry. 2 sin theta cos theta+cos theta=0 @Nnesha
alyssa_xo
  • alyssa_xo
as nnesha said, it's either in the 1st or 4th quadrant http://upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Unit_circle_angles_color.svg/1024px-Unit_circle_angles_color.svg.png reference this
Ilovepurple42043
  • Ilovepurple42043
yay awesome thanks
Nnesha
  • Nnesha
\[\huge\rm 2sin \theta \cos \theta + \cos \theta = 0\] take out common factor set it equal to 0 solve for cos and sin

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