Quadratic Equation

Hi there,

Today first we started doing some questions.
and we also did some question related to angles.
When ever you are given a question like this, you should change tan to x.



so it would look like this:-








2x-1=0 or x+1=0
2x=1 x=-1
The roots are (1/2,-1)

So the roots are (1/2,-1)
Now the next step is that we have to find the angles of theta.
angles of theta are
26.6, and 153.4 when theta is 1/2
-45, and 135 when theta is -1.


After that we did a little bit about imaginary numbers.
The general definition for imaginary number is that

For example :-

Next scribe :- Julius