sa45
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(i) Write down the exact value of cos π
6 . [1]
The finite region R is bounded by the curve y = cos
2
x, where x is measured in radians,
the positive coordinate axes and the line x = π
3 .
(ii) Use the trapezium rule with two intervals of equal width to estimate the area
of R, giving your answer to 3 significant figures. [4]
The finite region S is bounded by the curve y = sin2
x, where x is measured in radians,
the positive coordinate axes and the line x = π
3 .
(iii) Using your answer to part (b), find an estimate for the area of S.


Can someone explain part iii
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AlexS101
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As there is no part (b) listed and the post is virtually impossible to understand in that format I would reccomend reformatting the question and clarifying what part (B) refers to.
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AspiringUnderdog
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(Original post by sa45)
(i) Write down the exact value of cos π
6 . [1]
The finite region R is bounded by the curve y = cos
2
x, where x is measured in radians,
the positive coordinate axes and the line x = π
3 .
(ii) Use the trapezium rule with two intervals of equal width to estimate the area
of R, giving your answer to 3 significant figures. [4]
The finite region S is bounded by the curve y = sin2
x, where x is measured in radians,
the positive coordinate axes and the line x = π
3 .
(iii) Using your answer to part (b), find an estimate for the area of S.


Can someone explain part iii
C2 is over lol
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sa45
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not for MEI
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sa45
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(Original post by AlexS101)
As there is no part (b) listed and the post is virtually impossible to understand in that format I would reccomend reformatting the question and clarifying what part (B) refers to.
http://pmt.physicsandmathstutor.com/...20C2%20OCR.pdf

the link to the paper
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AlexS101
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OK so if you've got the answer to ii (which seems to be what the reference to B is on about).
What is the relationship between sin2x and cos2x?
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subtract the answer to part ii from pi/3 as sin2x is 1-cos2x and the integral of 1 between 0 and pi/3 is pi/3
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