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Thread: Trig functions

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    Trig functions

    Please help with 19b, c

    https://imgur.com/gallery/ZWmLu

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    Junior Member fan96's Avatar
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    Re: Trig functions

    b) use formulae for area of sector and area of triangle.

    c) repeat b) for the new area. By trying to solve for you should arrive at that equation naturally.
    HSC 2018 - [English Adv.] • [Maths Ext. 1] • [Maths Ext. 2] • [Chemistry] • [Software Design and Development]

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    Re: Trig functions

    Can you please please show the working im not getting it.

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    Junior Member fan96's Avatar
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    Re: Trig functions

    b)









    Solve that using your answer from part a). If you don't want to photocopy the graph you can just put the equation into Wolfram Alpha and take the answer from that (remember to convert to degrees afterwards). As long as you understand the concept of using a graph to solve the equation it doesn't matter.

    c) repeat part b) for
    Last edited by fan96; 28 Jan 2018 at 2:43 PM.
    HSC 2018 - [English Adv.] • [Maths Ext. 1] • [Maths Ext. 2] • [Chemistry] • [Software Design and Development]

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