Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

How do I find the amplitude, period, horizontal shift and vertical shift for the graph of y=3sin2(θ-30)+1?

I know the amplitude will be 3 but I don't know the rest.

Help please

Thanks a lot

3 Answers

Relevance
  • 1 decade ago
    Favorite Answer

    horizontal shift is leftward 30

    vertical shift is up 1

  • Laura
    Lv 4
    5 years ago

    period is pi , from 2pi / the 2 after the sin function The horizontal line about which this wave oscillates is shifted 1 up, The amplitude is 3 above and below the shifted horizntal axis Horizontal shift is -pi

  • 1 decade ago

    Start with y = sinθ

    θ --> 2θ so original period is halved to pi

    y --> y/3

    y = 3sin2θ so original amplitude becomes 3 times

    θ --> θ - 30

    y = 3sin2(θ-30) so orig graph's shifted to the right by 30

    y --> y - 1

    y = 3sin2(θ-30) + 1 so original graph's shifted up by 1

    amplitude 3 (like you guessed),

    period pi,

    horizontal shift +30

    vertical shift +1

Still have questions? Get your answers by asking now.