Hello! I'm in a pretty simple task but i'm really confused what command i can use!

I want maple to rewrite my 3 equations to one, where it's like Θ1 = ........

> Lar := 416;
                              416
> Iar := -45+158*cos(theta1)-416*cos(theta2);
            -45 + 158 cos(theta1) - 416 cos(theta2)

> Jar := 169+158*theta1-416*sin(theta2);
               169 + 158 theta1 - 416 sin(theta2)

This is the frame of the bike rear suspension i'm trying to calculate. Here is my maple sheet.

Download Maple-start.mw Maple-start.mw 

What i'm trying to achieve is a plot that would look a little like this:

Hello,

My name is Jonas, and i'm trying to do some calculations on bending of a aluminium frame. Now i'm really confused why it wont plot! 

I attached my maple file. I hope my question is clear! 

Thanks in advance!

-Jonas 

vraagforum.mw

Download vraagforum.mw

Hello everybody!

I couldn't find this question on the internet.. I hope for a answer here! I have to know this in 4 hours, and nobody here seems to be able to solve it. Thanks a lot in advance!!

What i'm trying to do is to solve these 10 variables. here is my maple: