Algebra/physics/Maths/trigonometry

[Nicky Peter Hollyoake]

Hello guys,

Long time no see.

I made this thread for anyone who wants any advise on these subject as I have been learning a big understanding of those.

I've currently joined a college doing Science Engineering and this is the best place I thought of where I would get the best advice.

My current problem is this:

The longest side of a triangle has the length (2x-1) cm. The other sides have the lengths (x-1) cm and (x+1) cm. Given that the largest angle is 120/degrees, work out :

a) The values of x
b) The area of the triangle

I figured that the first is to use quadratics and the cosine law and the second uses 1/2absin(C) (which I'm okay with, it's mostly the first question).

Thanks for anyone who can help.

- Nicky

[matthew]

Hi Nicky, is this a homework question. :-)

Your best place to get an accurate answer might be a site like Mathematics Stack Exchange.

[Nicky Peter Hollyoake]

No it wasn't a home work question, it was some revision I was doing:) but thanks for the website, I manage to pass my first test (algebra) second test is now calculus.

[matthew]

What College are you studying at Nicky?