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Ilovepurple42043

  • one year ago

use the unit circle to find the inverse function value degrees. cos^-1(sqrt2/2)

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  1. anonymous
    • one year ago
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    You should ask this question in pre calc you might get a better answer

  2. Ilovepurple42043
    • one year ago
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    is ther a pre calc section?

  3. Nnesha
    • one year ago
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    is there more information ?

  4. Nnesha
    • one year ago
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    |dw:1432753605791:dw| CAST rule given cos value is positive so its either in first or 4th quadrant

  5. Ilovepurple42043
    • one year ago
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    ther is sorry. 2 sin theta cos theta+cos theta=0 @Nnesha

  6. alyssa_xo
    • one year ago
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    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

  7. Ilovepurple42043
    • one year ago
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    yay awesome thanks

  8. Nnesha
    • one year ago
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    \[\huge\rm 2sin \theta \cos \theta + \cos \theta = 0\] take out common factor set it equal to 0 solve for cos and sin

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