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Size:  152.0 KB can anyone help me with how to approach part bii on this question. ive done parts a and bi and checked answers, all alright, but cant seem to get to the answer for bii and dont really know what method im supposed to be using, im just guessing tbh


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    Do you know the formula for integrating a polar equation? I'll assume you do but just in case

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    Area of a sector = (1/2)int(r^2 d(theta)), obviously using the limits for theta


    Basically, you can integrate to find the area between the arc OP and the line OP, and since you already have the area of the triangle finding the shaded area is just a matter of subtraction.
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    (Original post by tsr_username01)
    Name:  ImageUploadedByStudent Room1422796656.105690.jpg
Views: 55
Size:  152.0 KB can anyone help me with how to approach part bii on this question. ive done parts a and bi and checked answers, all alright, but cant seem to get to the answer for bii and dont really know what method im supposed to be using, im just guessing tbh


    Posted from TSR Mobile
    look at some examples in the link

    http://www.madasmaths.com/archive/ma..._questions.pdf
 
 
 
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