anonymous
  • anonymous
3cos^2(x)-sin^2(x)=0
Mathematics
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anonymous
  • anonymous
3cos^2(x)-sin^2(x)=0
Mathematics
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
have to find the soultions on the interval [0, 2pi)
anonymous
  • anonymous
Use the identity cos^2(x)=1-sin^2(x) and you will have a problem in terms of sin^2(x)
anonymous
  • anonymous
thank you!

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anonymous
  • anonymous
but that doesn't work out.. unless im doing it wrong..?
anonymous
  • anonymous
It goes: 3(1-sin^2(x))-sin^2(x)=0 3-3sin^2(x)-sin^2(x)=0 So -4sin^2(x)=-3
anonymous
  • anonymous
okay.. so then sin(x)= sq root (3/4) but sin never equals the sq root (3/4) on the unit circle?
anonymous
  • anonymous
never mind. that would be the same as sq root (3) / 2 duhhh! hah i figured it out. thank you!!

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