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Alex-parker · May 2, 2009, 02:17 PM

Point Q is 4 km due west of B and C is on a bearing of 25 degrees from B. If the distance of C from A is 9 km find the distance CB

Alex-parker · May 2, 2009, 02:40 PM

Thanks dude

Hey you think you can do me a last favor?

Could you answer the question for my other question
Which has like 15 posts haha
Please?? /
The one where it says

How far is C north of A
And how far is C east of A

By the way I got How far is B north of A
Thanks a lot dude
It would be nice if you could help me with the other 2

I wouldn't annoy you after that then haha

galactus · May 2, 2009, 02:43 PM

OK. After making a booboo, I can give you one way of gong about it, but will it do any good.

I think you should see your teacher.

From the diagram, we see that AC=9, AB=4 and the angle at B is 115 degrees. That is 90+25=115.

Call the length of side BC=x.

$9=\sqrt{x^{2}+4^{2}-2x(4)cos(115)}$

Solve for x.

Alex-parker · May 2, 2009, 02:48 PM

Omg dude
Not for this!
The other previous question I had