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Recent content by mirolev

M
AS math 9709/May June/2018/ Paper 12 Hard Or Easy?

I probably got the same answer.
- mirolev
- Post #94
- May 11, 2018
- Forum: A-Levels
M
AS math 9709/May June/2018/ Paper 12 Hard Or Easy?

32pi/3
- mirolev
- Post #93
- May 11, 2018
- Forum: A-Levels
M
AS math 9709/May June/2018/ Paper 12 Hard Or Easy?

I think I got wrong answer or incomplete answer where curve lies above x-axis. Basically I found perfect square and then found k>9. Not sure, maybe that was the answer. In another question where 2cosx + 3sinx > 0 I found x > 323 and x < 146 but I forgot about 0 < x < 360. Might lose 1 mark for...
- mirolev
- Post #82
- May 11, 2018
- Forum: A-Levels
M
AS math 9709/May June/2018/ Paper 12 Hard Or Easy?

That's true. Area of 2 triangles should be 8*8tan(theta).
- mirolev
- Post #78
- May 10, 2018
- Forum: A-Levels
M
AS math 9709/May June/2018/ Paper 12 Hard Or Easy?

(i) Area of circle = area of shaded region. Find pi*r^2 = r^2*tan(theta) - (2theta*r^2)/2 where length of triangle is found by tan(theta) = AT/r (AT is one of 2 tangents to the circle). (ii) Formula used is theta*r = arc length. 19.2 = 8*2theta, theta = 1.2 (iii) Shaded area is found by...
- mirolev
- Post #71
- May 10, 2018
- Forum: A-Levels

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