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can you just tell me how to solve part b? i dont get what they did in the ms.
i did that. but they did something else in the marking scheme. they took f(theta) as cos2theta. what about the 1/2 and 7/2? http://www.edexcel.com/migrationdoc...lum 2000/june2010-ms/6666_01_msc_20100714.pdf
owwwwwwh, got it! thanks alot broin the mark scheme they skipped some steps but the answer is correct, here is how i solved it.
Tell me if there is anything you don't understand.
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