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# Find the radius of a circle inscribed within a sector?

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1. Night before the exam and I'm still revising- I know, I'm terrible.

Came across a question in the June 2011 C2 paper and I have no idea how I'm supposed to do it. The mark scheme didn't make any sense and all the solutions I found didn't give me the answer specified in the mark scheme when I tried them out.

That's the question- part (b) is the one I don't understand. How on earth do I do that? (also, I was not aware anything like that was even on the syllabus)

Many thanks!
2. (Original post by LanasTea)
Night before the exam and I'm still revising- I know, I'm terrible.

Came across a question in the June 2011 C2 paper and I have no idea how I'm supposed to do it. The mark scheme didn't make any sense and all the solutions I found didn't give me the answer specified in the mark scheme when I tried them out.

That's the question- part (b) is the one I don't understand. How on earth do I do that? (also, I was not aware anything like that was even on the syllabus)

Many thanks!
See this post, i have answered it here.
3. (Original post by raheem94)
See this post, i have answered it here.
Thank you
4. edit: dw

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