What do you not understand? Because I can't see any mistake ...
Calculate the discriminant and afterwars do the back-substitution.
This is my problem:
(image looks funky on here so url provided)
LaTeX:
http://rogercortesi.com/eqn/tempimagedir/eqn9167.png
My line of thinking is shown but the result makes no sense to me. My result just does not seem correct. Can someone show me my error?
http://rogercortesi.com/eqn/tempimagedir/eqn9167.png
Would this be correct then?
First, you mustn't write , you should write .
Now, after you solved your quadratic equation you got two roots.
One root is , and the second root is .
Now you wrote:
, tell me how it is possible?!
That is wrong!
What you can write is the following:
If we return back to origins, we get:
It is impossible!
So we left only with:
So, why you took the from both sides?
gah, don't know why I used arcsin all of a sudden.
let me rewrite this:
http://rogercortesi.com/eqn/tempimagedir/eqn9167.png
I dont know how to do the little +/- in LaTeX so I just split them with division symbol.
The answer is looking for all values between 0-360 degrees. I just didn't type all that out.
I didn't mean to put 0= 1/2(-1+/-sqrt[3]). should be x. I just didn't put an x in the next line.
http://rogercortesi.com/eqn/tempimagedir/eqn9167.png