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Thread: 3U Cambridge 11 Homework; Help!

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    3U Cambridge 11 Homework; Help!

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    This is a question from chapter 4, 3U Cambridge yr 11. How would you do questions (i) and (ii)?
    Thank you in advance!

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    Re: 3U Cambridge 11 Homework; Help!

    i) Construct the centre point O. Connect that point with A and C to form Triangle AOC.

    OA = OC = 6 (Radii of circle)
    Angle AOC = 30 (angle at the centre is twice the angle at the circumference)
    Now simply use the cos rule to find AC.

    ii) One way I see is using the sine rule to find the value of one of the other sides, then use the formula to get the area.
    Last edited by integral95; 18 May 2018 at 7:26 PM.
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