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# aqa fp3 help Watch

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

Spoiler:
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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.
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

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