Help with Paper 2 HL Maths question, please?

ButtonBox · 09-06-2012 4:38pm #1

Hi.

I was revising maths there from my maths exam papers, and I'm completely stuck on one question. 2010, Paper 2, Question 3, c, part (i).

http://www.examinations.ie/archive/exampapers/2010/JC003ALP200EV.pdf
^^ Question 3 of that.

Find |EB|.

All I've gotten is that |ED| is parallel to |BC|.

|ED| = 3, because |AE| = 5 and |AD| = 4.
5, 4, and 3 make a triangle together. (I think?)

And I think that if you join E to F, the angles could be split equally and = 90 degrees? Not sure on that one.

But yeah, I'm completely stuck after that. If anyone has any ideas on how to work it out, t'would be great.
Thanks.

:D

TheRhino0012 · 09-06-2012 4:52pm

AD/DC = AE/EB hope i'm right, see if it's right....

ButtonBox · 09-06-2012 5:02pm

No, sorry.

Thank you though.

Forgot to include the question.

It's find |EB|.

iliketwixbars · 09-06-2012 5:08pm

Here ya go

.

Ask if any questions.

iliketwixbars · 09-06-2012 5:13pm

The question was based around the theorem that "If two triangles are equiangular, the lengths of corresponding sides are in proportion".

ButtonBox · 09-06-2012 5:15pm

iliketwixbars wrote: »

Here ya go .

Ask if any questions.

Thank you so much!

:D:D

Help with Paper 2 HL Maths question, please?

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