appleibeats
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- 2016
Re: Year 11 Mathematics 3 Unit Cambridge Question & Answer Thread
Not entirely sure what you mean.
Not entirely sure what you mean.
Not entirely sure what you mean.
Two circles intersect at point P and Q. The tangent to one circle at P meets the other at A and the tangent to the second circle at P meets the first circle at B. Show that triangles PQA and BQP are similar.
You're not the only one.Not sure if it is just me, but above you diagram of the circles there are two squares. I think they are meant to be images?? Am I the only one seeing this??
Using a mac.....
I think those squares are LaTeX lines, since the other LaTeX stuff on this page is like that too. LaTeX hasn't been working here lately. It doesn't matter though, since you can see the proof from the diagram, it's basically just using the alternate segment theorem. Also, it usually helps to join the common chord for these types of questions, as that diagram did (the chord PQ).Not sure if it is just me, but above you diagram of the circles there are two squares. I think they are meant to be images?? Am I the only one seeing this??
Using a mac.....
PQR is an isosceles triangle with PQ = PR . A line through R, perpendicular to PR meets the bisector of angle QPR at S. Show that P,Q,R and S are concyclic.
No I don't think so.
Learn that theory first then before attempting that Q.No I don't think so.
= Integral of 4x + 2x/ ...... dx
= Integral 4 (u-4)^1/2 + u^-2 du
Solve 2cos^2 x - 3sinxcosx + 2sin^2 x = 0
I tried dividing by cos^2 x
to get
2tan^2 x - 3tanx + 2 = 0
Not sure where to go from here though, as you can't factorise, use completing the square or the quadratic formula.
This would mean there are no solutions. Here is another way of reaching the same answer:Not sure where to go from here though, as you can't factorise, use completing the square or the quadratic formula.
Why don't you substitute to check?Solve the equation sec^2 x - 2 tanx = 0 for 0 < or equal to x < or equal to 180
I got this but I think I am very wrong.
1/cos^2 x -2 sinx/cosx = 0
( x cos^2x)
1 - 2sinxcosx = 0
1 - sin2x = 0
sin2x = 1
2x = 90
x = 45
Is that wrong??