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anonymous

  • one year ago

Is square root 1 minus sine squared theta = cos Θ true? If so, in which quadrants does angle Θ terminate?

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  1. anonymous
    • one year ago
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    lyn can u help me next :3

  2. anonymous
    • one year ago
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    False True; quadrants I & IV True; quadrants II & III True; quadrants I & III

  3. LynFran
    • one year ago
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    \[\cos ^{2}\theta+\sin ^{2}\theta=1\]\[\cos ^{2}\theta=1-\sin ^{2}\theta \]\[\cos \theta=\sqrt{(1-\sin ^{2} \theta)}\]

  4. anonymous
    • one year ago
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    how do i know which quadrant its in?

  5. anonymous
    • one year ago
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    @LynFran ^^^

  6. LynFran
    • one year ago
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    the 1st and last quadrant

  7. LynFran
    • one year ago
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    thats where cos is positive ...

  8. anonymous
    • one year ago
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    ohhh ok i see. thanks so so much. hey do you ming helping me with a couple more? you don't have to if you don't want. @LynFran

  9. LynFran
    • one year ago
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    so tag me in new post

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