or
or .
Since for all , that means the second equation is impossible.
So
where .
Here's the equation: cos^2 ѳ-cos ѳ=2
I usually apply this set of method to solve such questions but it doesn't seem to work out this time round:
1)Identify quadrant
2)Find basic angle
3)Adjust domain
4)Find values of ѳ
If you see what i mean.
Anyway, please do help out.
Thanks in advance!